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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
a2299aba | 56 | #include "bgpd/bgp_nht.h" |
128ea8ab | 57 | |
58 | /* | |
59 | * Definitions and external declarations. | |
60 | */ | |
96244aca DL |
61 | DEFINE_QOBJ_TYPE(bgpevpn); |
62 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 63 | |
64 | ||
65 | /* | |
66 | * Static function declarations | |
67 | */ | |
d62a17ae | 68 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 | 69 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 70 | |
71 | /* | |
72 | * Private functions. | |
73 | */ | |
74 | ||
75 | /* | |
76 | * Make vni hash key. | |
77 | */ | |
d8b87afe | 78 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 79 | { |
d8b87afe | 80 | const struct bgpevpn *vpn = p; |
d62a17ae | 81 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 82 | } |
83 | ||
84 | /* | |
85 | * Comparison function for vni hash | |
86 | */ | |
74df8d6d | 87 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 88 | { |
d62a17ae | 89 | const struct bgpevpn *vpn1 = p1; |
90 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 91 | |
d62a17ae | 92 | if (!vpn1 && !vpn2) |
74df8d6d | 93 | return true; |
d62a17ae | 94 | if (!vpn1 || !vpn2) |
74df8d6d | 95 | return false; |
d62a17ae | 96 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 97 | } |
98 | ||
c44ab6f1 | 99 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
100 | { |
101 | const struct bgpevpn *vpn1 = p1; | |
102 | const struct bgpevpn *vpn2 = p2; | |
103 | ||
104 | return vpn1->vni - vpn2->vni; | |
105 | } | |
106 | ||
10ebe1ab MK |
107 | /* |
108 | * Make vrf import route target hash key. | |
109 | */ | |
d8b87afe | 110 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 111 | { |
d8b87afe QY |
112 | const struct vrf_irt_node *irt = p; |
113 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
114 | |
115 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
116 | } |
117 | ||
118 | /* | |
119 | * Comparison function for vrf import rt hash | |
120 | */ | |
74df8d6d | 121 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
122 | { |
123 | const struct vrf_irt_node *irt1 = p1; | |
124 | const struct vrf_irt_node *irt2 = p2; | |
125 | ||
126 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 127 | return true; |
10ebe1ab MK |
128 | |
129 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 130 | return false; |
10ebe1ab MK |
131 | |
132 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
133 | } | |
134 | ||
135 | /* | |
f9b8094e | 136 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
137 | */ |
138 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
139 | { | |
5e53dce3 | 140 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
141 | struct vrf_irt_node *irt; |
142 | ||
5e53dce3 T |
143 | bgp_evpn = bgp_get_evpn(); |
144 | if (!bgp_evpn) { | |
e50f7cfd | 145 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 146 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
147 | return NULL; |
148 | } | |
149 | ||
150 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
151 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
152 | |
153 | irt->rt = *rt; | |
154 | irt->vrfs = list_new(); | |
155 | ||
156 | /* Add to hash */ | |
5e53dce3 | 157 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
158 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
159 | return NULL; | |
160 | } | |
161 | ||
162 | return irt; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Free the vrf import rt node | |
167 | */ | |
168 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
169 | { | |
5e53dce3 | 170 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 171 | |
5e53dce3 T |
172 | bgp_evpn = bgp_get_evpn(); |
173 | if (!bgp_evpn) { | |
e50f7cfd | 174 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 175 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
176 | return; |
177 | } | |
178 | ||
5e53dce3 | 179 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 180 | list_delete(&irt->vrfs); |
10ebe1ab MK |
181 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
182 | } | |
183 | ||
184 | /* | |
185 | * Function to lookup Import RT node - used to map a RT to set of | |
186 | * VNIs importing routes with that RT. | |
187 | */ | |
188 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
189 | { | |
5e53dce3 | 190 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
191 | struct vrf_irt_node *irt; |
192 | struct vrf_irt_node tmp; | |
193 | ||
5e53dce3 T |
194 | bgp_evpn = bgp_get_evpn(); |
195 | if (!bgp_evpn) { | |
f9b8094e T |
196 | flog_err( |
197 | EC_BGP_NO_DFLT, | |
198 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
199 | return NULL; |
200 | } | |
201 | ||
202 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
203 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 204 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
205 | return irt; |
206 | } | |
207 | ||
208 | /* | |
209 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
210 | */ | |
996c9314 | 211 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
212 | { |
213 | struct listnode *node = NULL, *nnode = NULL; | |
214 | struct bgp *tmp_bgp_vrf = NULL; | |
215 | ||
216 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
217 | if (tmp_bgp_vrf == bgp_vrf) | |
218 | return 1; | |
219 | } | |
220 | return 0; | |
221 | } | |
222 | ||
14c1a7bf | 223 | /* |
224 | * Make import route target hash key. | |
225 | */ | |
d8b87afe | 226 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 227 | { |
d8b87afe QY |
228 | const struct irt_node *irt = p; |
229 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
230 | |
231 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 232 | } |
233 | ||
234 | /* | |
235 | * Comparison function for import rt hash | |
236 | */ | |
74df8d6d | 237 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 238 | { |
d62a17ae | 239 | const struct irt_node *irt1 = p1; |
240 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 241 | |
d62a17ae | 242 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 243 | return true; |
14c1a7bf | 244 | |
d62a17ae | 245 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 246 | return false; |
14c1a7bf | 247 | |
d62a17ae | 248 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 249 | } |
250 | ||
7724c0a1 | 251 | /* |
128ea8ab | 252 | * Create a new import_rt |
253 | */ | |
d62a17ae | 254 | static struct irt_node *import_rt_new(struct bgp *bgp, |
255 | struct ecommunity_val *rt) | |
128ea8ab | 256 | { |
d62a17ae | 257 | struct irt_node *irt; |
128ea8ab | 258 | |
d62a17ae | 259 | if (!bgp) |
260 | return NULL; | |
128ea8ab | 261 | |
d62a17ae | 262 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 263 | |
d62a17ae | 264 | irt->rt = *rt; |
265 | irt->vnis = list_new(); | |
128ea8ab | 266 | |
d62a17ae | 267 | /* Add to hash */ |
268 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
269 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
270 | return NULL; | |
271 | } | |
128ea8ab | 272 | |
d62a17ae | 273 | return irt; |
128ea8ab | 274 | } |
275 | ||
276 | /* | |
277 | * Free the import rt node | |
7724c0a1 | 278 | */ |
d62a17ae | 279 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 280 | { |
d62a17ae | 281 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 282 | list_delete(&irt->vnis); |
d62a17ae | 283 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 284 | } |
285 | ||
14c1a7bf | 286 | /* |
128ea8ab | 287 | * Function to lookup Import RT node - used to map a RT to set of |
288 | * VNIs importing routes with that RT. | |
289 | */ | |
d62a17ae | 290 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
291 | struct ecommunity_val *rt) | |
128ea8ab | 292 | { |
d62a17ae | 293 | struct irt_node *irt; |
294 | struct irt_node tmp; | |
128ea8ab | 295 | |
d62a17ae | 296 | memset(&tmp, 0, sizeof(struct irt_node)); |
297 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
298 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
299 | return irt; | |
128ea8ab | 300 | } |
301 | ||
302 | /* | |
303 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
304 | */ | |
d62a17ae | 305 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 306 | { |
d62a17ae | 307 | struct listnode *node, *nnode; |
308 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 309 | |
d62a17ae | 310 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
311 | if (tmp_vpn == vpn) | |
312 | return 1; | |
313 | } | |
128ea8ab | 314 | |
d62a17ae | 315 | return 0; |
128ea8ab | 316 | } |
317 | ||
318 | /* | |
319 | * Compare Route Targets. | |
320 | */ | |
d62a17ae | 321 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
322 | struct ecommunity *ecom2) | |
128ea8ab | 323 | { |
d62a17ae | 324 | if (ecom1 && !ecom2) |
325 | return -1; | |
128ea8ab | 326 | |
d62a17ae | 327 | if (!ecom1 && ecom2) |
328 | return 1; | |
128ea8ab | 329 | |
d62a17ae | 330 | if (!ecom1 && !ecom2) |
331 | return 0; | |
128ea8ab | 332 | |
d62a17ae | 333 | if (ecom1->str && !ecom2->str) |
334 | return -1; | |
128ea8ab | 335 | |
d62a17ae | 336 | if (!ecom1->str && ecom2->str) |
337 | return 1; | |
128ea8ab | 338 | |
d62a17ae | 339 | if (!ecom1->str && !ecom2->str) |
340 | return 0; | |
128ea8ab | 341 | |
d62a17ae | 342 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 343 | } |
344 | ||
987d8198 DS |
345 | static void evpn_xxport_delete_ecomm(void *val) |
346 | { | |
347 | struct ecommunity *ecomm = val; | |
348 | ecommunity_free(&ecomm); | |
349 | } | |
350 | ||
128ea8ab | 351 | /* |
352 | * Mask off global-admin field of specified extended community (RT), | |
353 | * just retain the local-admin field. | |
354 | */ | |
d62a17ae | 355 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
356 | struct ecommunity_val *src) | |
128ea8ab | 357 | { |
d7c0a89a | 358 | uint8_t type; |
128ea8ab | 359 | |
d62a17ae | 360 | type = src->val[0]; |
361 | dst->val[0] = 0; | |
362 | if (type == ECOMMUNITY_ENCODE_AS) { | |
363 | dst->val[2] = dst->val[3] = 0; | |
364 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
365 | || type == ECOMMUNITY_ENCODE_IP) { | |
366 | dst->val[2] = dst->val[3] = 0; | |
367 | dst->val[4] = dst->val[5] = 0; | |
368 | } | |
128ea8ab | 369 | } |
370 | ||
10ebe1ab MK |
371 | /* |
372 | * Map one RT to specified VRF. | |
373 | * bgp_vrf = BGP vrf instance | |
374 | */ | |
996c9314 | 375 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
376 | { |
377 | struct vrf_irt_node *irt = NULL; | |
378 | struct ecommunity_val eval_tmp; | |
379 | ||
380 | /* If using "automatic" RT, | |
381 | * we only care about the local-admin sub-field. | |
382 | * This is to facilitate using L3VNI(VRF-VNI) | |
383 | * as the RT for EBGP peering too. | |
384 | */ | |
385 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 386 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
387 | mask_ecom_global_admin(&eval_tmp, eval); |
388 | ||
389 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
390 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
391 | /* Already mapped. */ | |
392 | return; | |
10ebe1ab | 393 | |
e066d6d0 | 394 | if (!irt) |
10ebe1ab | 395 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
396 | |
397 | /* Add VRF to the list for this RT. */ | |
398 | listnode_add(irt->vrfs, bgp_vrf); | |
399 | } | |
400 | ||
401 | /* | |
402 | * Unmap specified VRF from specified RT. If there are no other | |
403 | * VRFs for this RT, then the RT hash is deleted. | |
404 | * bgp_vrf: BGP VRF specific instance | |
405 | */ | |
996c9314 | 406 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
407 | { |
408 | /* Delete VRF from list for this RT. */ | |
409 | listnode_delete(irt->vrfs, bgp_vrf); | |
410 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
411 | vrf_import_rt_free(irt); |
412 | } | |
413 | } | |
414 | ||
128ea8ab | 415 | /* |
416 | * Map one RT to specified VNI. | |
14c1a7bf | 417 | */ |
d62a17ae | 418 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
419 | struct ecommunity_val *eval) | |
128ea8ab | 420 | { |
d62a17ae | 421 | struct irt_node *irt; |
422 | struct ecommunity_val eval_tmp; | |
128ea8ab | 423 | |
d62a17ae | 424 | /* If using "automatic" RT, we only care about the local-admin |
425 | * sub-field. | |
426 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
427 | */ | |
428 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
429 | if (!is_import_rt_configured(vpn)) | |
430 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 431 | |
d62a17ae | 432 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 433 | if (irt) |
d62a17ae | 434 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
435 | /* Already mapped. */ | |
436 | return; | |
128ea8ab | 437 | |
d62a17ae | 438 | if (!irt) { |
439 | irt = import_rt_new(bgp, &eval_tmp); | |
440 | assert(irt); | |
441 | } | |
128ea8ab | 442 | |
d62a17ae | 443 | /* Add VNI to the hash list for this RT. */ |
444 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 445 | } |
446 | ||
447 | /* | |
448 | * Unmap specified VNI from specified RT. If there are no other | |
449 | * VNIs for this RT, then the RT hash is deleted. | |
450 | */ | |
d62a17ae | 451 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
452 | struct irt_node *irt) | |
14c1a7bf | 453 | { |
d62a17ae | 454 | /* Delete VNI from hash list for this RT. */ |
455 | listnode_delete(irt->vnis, vpn); | |
456 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 457 | import_rt_free(bgp, irt); |
458 | } | |
14c1a7bf | 459 | } |
460 | ||
0ca10580 | 461 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 462 | const struct prefix_evpn *p, |
0ca10580 CS |
463 | struct attr *attr, uint8_t flags) |
464 | { | |
465 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
466 | ||
467 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
468 | if (!bgp_vrf) | |
469 | return; | |
470 | ||
b96cafa3 CS |
471 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
472 | return; | |
473 | ||
474 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
475 | * in case of route is self MAC-IP, | |
476 | * advertise-pip and advertise-svi-ip features | |
477 | * are enabled. | |
478 | * Otherwise, for all host MAC-IP route's | |
27727001 | 479 | * copy anycast RMAC. |
b96cafa3 CS |
480 | */ |
481 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
482 | && bgp_vrf->evpn_info->advertise_pip && | |
483 | bgp_vrf->evpn_info->is_anycast_mac) { | |
484 | /* copy sys rmac */ | |
485 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
486 | ETH_ALEN); | |
487 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
488 | attr->mp_nexthop_global_in = | |
489 | bgp_vrf->evpn_info->pip_ip; | |
490 | } else | |
491 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 492 | } |
b96cafa3 | 493 | |
128ea8ab | 494 | /* |
495 | * Create RT extended community automatically from passed information: | |
496 | * of the form AS:VNI. | |
497 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
498 | * the need is to get a RT value that will be unique across different | |
499 | * VNIs but the same across routers (in the same AS) for a particular | |
500 | * VNI. | |
501 | */ | |
c581d8b0 | 502 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 503 | { |
d62a17ae | 504 | struct ecommunity_val eval; |
b90d4580 CS |
505 | struct ecommunity *ecomadd, *ecom; |
506 | bool ecom_found = false; | |
507 | struct listnode *node; | |
128ea8ab | 508 | |
bf1061d8 VB |
509 | if (bgp->advertise_autort_rfc8365) |
510 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 511 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 512 | |
d62a17ae | 513 | ecomadd = ecommunity_new(); |
1207a5bc | 514 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
515 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
516 | if (ecommunity_cmp(ecomadd, ecom)) | |
517 | ecom_found = true; | |
518 | ||
519 | if (!ecom_found) | |
520 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
521 | else |
522 | ecommunity_free(&ecomadd); | |
128ea8ab | 523 | } |
14c1a7bf | 524 | |
525 | /* | |
128ea8ab | 526 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
527 | * creation of a VNI. | |
528 | */ | |
d62a17ae | 529 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 530 | { |
d62a17ae | 531 | bgp_evpn_derive_auto_rd(bgp, vpn); |
532 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
533 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 534 | } |
535 | ||
1ec31309 | 536 | /* |
537 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
538 | */ | |
539 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
540 | { | |
541 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
542 | return; | |
543 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
544 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
545 | } | |
546 | ||
09319b4e DS |
547 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
548 | safi_t safi, | |
549 | const struct prefix_evpn *evp, | |
550 | struct prefix_rd *prd) | |
c44ab6f1 AK |
551 | { |
552 | struct prefix_evpn global_p; | |
553 | ||
554 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
555 | /* prefix in the global table doesn't include the VTEP-IP so | |
556 | * we need to create a different copy of the prefix | |
557 | */ | |
558 | evpn_type1_prefix_global_copy(&global_p, evp); | |
559 | evp = &global_p; | |
560 | } | |
561 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
562 | } | |
563 | ||
09319b4e DS |
564 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
565 | safi_t safi, | |
566 | const struct prefix_evpn *evp, | |
567 | struct prefix_rd *prd) | |
c44ab6f1 AK |
568 | { |
569 | struct prefix_evpn global_p; | |
570 | ||
571 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
572 | /* prefix in the global table doesn't include the VTEP-IP so | |
573 | * we need to create a different copy of the prefix | |
574 | */ | |
575 | evpn_type1_prefix_global_copy(&global_p, evp); | |
576 | evp = &global_p; | |
577 | } | |
578 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
579 | } | |
580 | ||
128ea8ab | 581 | /* |
582 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 583 | */ |
d62a17ae | 584 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 585 | const struct prefix_evpn *p, |
d62a17ae | 586 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 587 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 588 | { |
589 | struct stream *s; | |
0ffd0fb5 | 590 | uint16_t ipa_len; |
c44ab6f1 | 591 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 592 | |
593 | /* Check socket. */ | |
594 | if (!zclient || zclient->sock < 0) | |
595 | return 0; | |
596 | ||
597 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
598 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
599 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
600 | zlog_debug( |
601 | "%s: No zebra instance to talk to, not installing remote macip", | |
602 | __func__); | |
d62a17ae | 603 | return 0; |
bb4ef1ae | 604 | } |
c44ab6f1 AK |
605 | |
606 | if (!esi) | |
607 | esi = zero_esi; | |
d62a17ae | 608 | s = zclient->obuf; |
609 | stream_reset(s); | |
610 | ||
996c9314 LB |
611 | zclient_create_header( |
612 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
613 | bgp->vrf_id); | |
d62a17ae | 614 | stream_putl(s, vpn->vni); |
3714a385 | 615 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 616 | /* IP address length and IP address, if any. */ |
3714a385 | 617 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 618 | stream_putw(s, 0); |
d62a17ae | 619 | else { |
3714a385 | 620 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 621 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 622 | stream_putw(s, ipa_len); |
3714a385 | 623 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 624 | } |
9c7edc03 AK |
625 | /* If the ESI is valid that becomes the nexthop; tape out the |
626 | * VTEP-IP for that case | |
c44ab6f1 | 627 | */ |
9c7edc03 | 628 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 629 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
630 | else |
631 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 632 | |
ead40654 | 633 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 634 | /* Also TX the sequence number of the best route. */ |
635 | if (add) { | |
ead40654 | 636 | stream_putc(s, flags); |
f07e1c99 | 637 | stream_putl(s, seq); |
c44ab6f1 | 638 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 639 | } |
d62a17ae | 640 | |
641 | stream_putw_at(s, 0, stream_get_endp(s)); | |
642 | ||
643 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 644 | zlog_debug( |
c0d72166 | 645 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 646 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
647 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
648 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 649 | |
650 | return zclient_send_message(zclient); | |
7ef5a232 | 651 | } |
b18825eb | 652 | |
128ea8ab | 653 | /* |
654 | * Add (update) or delete remote VTEP from zebra. | |
655 | */ | |
d62a17ae | 656 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
657 | const struct prefix_evpn *p, |
658 | int flood_control, int add) | |
128ea8ab | 659 | { |
d62a17ae | 660 | struct stream *s; |
128ea8ab | 661 | |
d62a17ae | 662 | /* Check socket. */ |
663 | if (!zclient || zclient->sock < 0) | |
664 | return 0; | |
128ea8ab | 665 | |
d62a17ae | 666 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
667 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
668 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
669 | zlog_debug( |
670 | "%s: No zebra instance to talk to, not installing remote vtep", | |
671 | __func__); | |
d62a17ae | 672 | return 0; |
bb4ef1ae | 673 | } |
128ea8ab | 674 | |
d62a17ae | 675 | s = zclient->obuf; |
676 | stream_reset(s); | |
128ea8ab | 677 | |
996c9314 LB |
678 | zclient_create_header( |
679 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
680 | bgp->vrf_id); | |
d62a17ae | 681 | stream_putl(s, vpn->vni); |
3714a385 | 682 | if (is_evpn_prefix_ipaddr_v4(p)) |
683 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
684 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 685 | flog_err( |
e50f7cfd | 686 | EC_BGP_VTEP_INVALID, |
d62a17ae | 687 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
688 | add ? "ADD" : "DEL", vpn->vni); | |
689 | return -1; | |
690 | } | |
b16dd019 | 691 | stream_putl(s, flood_control); |
128ea8ab | 692 | |
d62a17ae | 693 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 694 | |
d62a17ae | 695 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 696 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 697 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 698 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 699 | |
d62a17ae | 700 | return zclient_send_message(zclient); |
128ea8ab | 701 | } |
702 | ||
342dd0c6 | 703 | /* |
704 | * Build extended communities for EVPN prefix route. | |
705 | */ | |
706 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
707 | struct attr *attr) | |
708 | { | |
709 | struct ecommunity ecom_encap; | |
342dd0c6 | 710 | struct ecommunity_val eval; |
711 | struct ecommunity_val eval_rmac; | |
712 | bgp_encap_types tnl_type; | |
713 | struct listnode *node, *nnode; | |
714 | struct ecommunity *ecom; | |
fab92da7 | 715 | struct ecommunity *old_ecom; |
342dd0c6 | 716 | struct list *vrf_export_rtl = NULL; |
717 | ||
718 | /* Encap */ | |
719 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
720 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
721 | encode_encap_extcomm(tnl_type, &eval); | |
722 | ecom_encap.size = 1; | |
34540b0d | 723 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 724 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 725 | |
726 | /* Add Encap */ | |
fab92da7 | 727 | if (attr->ecommunity) { |
728 | old_ecom = attr->ecommunity; | |
729 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
730 | if (!old_ecom->refcnt) | |
731 | ecommunity_free(&old_ecom); | |
732 | } else | |
733 | ecom = ecommunity_dup(&ecom_encap); | |
734 | attr->ecommunity = ecom; | |
5bbd2cc1 | 735 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 736 | |
737 | /* Add the export RTs for L3VNI/VRF */ | |
738 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
739 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
740 | attr->ecommunity = | |
741 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 742 | |
743 | /* add the router mac extended community */ | |
744 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 745 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 746 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 747 | } |
748 | ||
749 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
750 | } | |
751 | ||
128ea8ab | 752 | /* |
1ec31309 | 753 | * Build extended communities for EVPN route. |
754 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
755 | * and ENCAP extended communities are applicable for all routes. | |
756 | * The default gateway extended community and MAC mobility (sticky) extended | |
757 | * community are added as needed based on passed settings - only for type-2 | |
758 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
759 | * added, if present, based on passed settings - only for non-link-local | |
760 | * type-2 routes. | |
128ea8ab | 761 | */ |
7ec156a9 | 762 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 763 | int add_l3_ecomm) |
128ea8ab | 764 | { |
d62a17ae | 765 | struct ecommunity ecom_encap; |
766 | struct ecommunity ecom_sticky; | |
ead40654 | 767 | struct ecommunity ecom_default_gw; |
68e33151 | 768 | struct ecommunity ecom_na; |
d62a17ae | 769 | struct ecommunity_val eval; |
770 | struct ecommunity_val eval_sticky; | |
ead40654 | 771 | struct ecommunity_val eval_default_gw; |
bc59a672 | 772 | struct ecommunity_val eval_rmac; |
68e33151 | 773 | struct ecommunity_val eval_na; |
9c7edc03 | 774 | bool proxy; |
68e33151 | 775 | |
d62a17ae | 776 | bgp_encap_types tnl_type; |
777 | struct listnode *node, *nnode; | |
778 | struct ecommunity *ecom; | |
d7c0a89a | 779 | uint32_t seqnum; |
7a3e76f1 | 780 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 781 | |
d62a17ae | 782 | /* Encap */ |
783 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
784 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
785 | encode_encap_extcomm(tnl_type, &eval); | |
786 | ecom_encap.size = 1; | |
34540b0d | 787 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 788 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 789 | |
d62a17ae | 790 | /* Add Encap */ |
791 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
5bbd2cc1 | 792 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 793 | |
7a3e76f1 | 794 | /* Add the export RTs for L2VNI */ |
d62a17ae | 795 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
796 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 797 | |
1ec31309 | 798 | /* Add the export RTs for L3VNI if told to - caller determines |
799 | * when this should be done. | |
523cafc4 | 800 | */ |
1ec31309 | 801 | if (add_l3_ecomm) { |
7ec156a9 MK |
802 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
803 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
804 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
805 | ecom)) | |
996c9314 LB |
806 | attr->ecommunity = ecommunity_merge( |
807 | attr->ecommunity, ecom); | |
7ec156a9 | 808 | } |
f1f8b53c | 809 | } |
7a3e76f1 | 810 | |
1ec31309 | 811 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 812 | if (attr->sticky) { |
813 | seqnum = 0; | |
814 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
815 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
816 | ecom_sticky.size = 1; | |
34540b0d | 817 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 818 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 819 | attr->ecommunity = |
820 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
821 | } | |
c85c03c7 | 822 | |
1ec31309 | 823 | /* Add RMAC, if told to. */ |
824 | if (add_l3_ecomm) { | |
bc59a672 | 825 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 826 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
827 | } |
828 | ||
1ec31309 | 829 | /* Add default gateway, if needed. */ |
ead40654 MK |
830 | if (attr->default_gw) { |
831 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
832 | encode_default_gw_extcomm(&eval_default_gw); | |
833 | ecom_default_gw.size = 1; | |
34540b0d | 834 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 835 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
836 | attr->ecommunity = |
837 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
838 | } |
839 | ||
9c7edc03 AK |
840 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
841 | if (attr->router_flag || proxy) { | |
68e33151 | 842 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 843 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 844 | ecom_na.size = 1; |
34540b0d | 845 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
846 | ecom_na.val = (uint8_t *)eval_na.val; |
847 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
848 | &ecom_na); | |
849 | } | |
850 | ||
d62a17ae | 851 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 852 | } |
853 | ||
854 | /* | |
855 | * Add MAC mobility extended community to attribute. | |
856 | */ | |
d7c0a89a | 857 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 858 | { |
859 | struct ecommunity ecom_tmp; | |
860 | struct ecommunity_val eval; | |
d7c0a89a | 861 | uint8_t *ecom_val_ptr; |
f6e07e1b | 862 | uint32_t i; |
d7c0a89a | 863 | uint8_t *pnt; |
d62a17ae | 864 | int type = 0; |
865 | int sub_type = 0; | |
866 | ||
867 | /* Build MM */ | |
868 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
869 | ||
870 | /* Find current MM ecommunity */ | |
421bb26a | 871 | ecom_val_ptr = NULL; |
d62a17ae | 872 | |
873 | if (attr->ecommunity) { | |
874 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
875 | pnt = attr->ecommunity->val + |
876 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 877 | type = *pnt++; |
878 | sub_type = *pnt++; | |
879 | ||
880 | if (type == ECOMMUNITY_ENCODE_EVPN | |
881 | && sub_type | |
882 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 883 | ecom_val_ptr = |
4371bf91 PG |
884 | (attr->ecommunity->val + |
885 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 886 | break; |
887 | } | |
888 | } | |
889 | } | |
890 | ||
891 | /* Update the existing MM ecommunity */ | |
421bb26a | 892 | if (ecom_val_ptr) { |
4371bf91 PG |
893 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
894 | * attr->ecommunity->unit_size); | |
d62a17ae | 895 | } |
896 | /* Add MM to existing */ | |
897 | else { | |
898 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
899 | ecom_tmp.size = 1; | |
34540b0d | 900 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 901 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 902 | |
f9a78910 DS |
903 | if (attr->ecommunity) |
904 | attr->ecommunity = | |
905 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
906 | else | |
907 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 908 | } |
128ea8ab | 909 | } |
910 | ||
911 | /* Install EVPN route into zebra. */ | |
d62a17ae | 912 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
913 | const struct prefix_evpn *p, |
914 | struct bgp_path_info *pi) | |
128ea8ab | 915 | { |
d62a17ae | 916 | int ret; |
d594a14c | 917 | uint8_t flags; |
b16dd019 | 918 | int flood_control; |
9c7edc03 | 919 | uint32_t seq; |
128ea8ab | 920 | |
d594a14c AK |
921 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
922 | flags = 0; | |
9c7edc03 AK |
923 | |
924 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
925 | if (pi->attr->sticky) | |
926 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
927 | if (pi->attr->default_gw) | |
928 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
929 | if (is_evpn_prefix_ipaddr_v6(p) && | |
930 | pi->attr->router_flag) | |
931 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
932 | ||
933 | seq = mac_mobility_seqnum(pi->attr); | |
934 | /* if local ES notify zebra that this is a sync path */ | |
935 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
936 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
937 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
938 | SET_FLAG(flags, | |
939 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
940 | } | |
941 | } else { | |
942 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
943 | return 0; | |
944 | ||
945 | /* if a local path is being turned around and sent | |
946 | * to zebra it is because it is a sync path on | |
947 | * a local ES | |
948 | */ | |
949 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
950 | /* supply the highest peer seq number to zebra | |
951 | * for MM seq syncing | |
952 | */ | |
953 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
954 | /* if any of the paths from the peer have the ROUTER | |
955 | * flag set install the local entry as a router entry | |
956 | */ | |
957 | if (is_evpn_prefix_ipaddr_v6(p) && | |
958 | (pi->attr->es_flags & | |
959 | ATTR_ES_PEER_ROUTER)) | |
960 | SET_FLAG(flags, | |
961 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
962 | ||
963 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
964 | SET_FLAG(flags, | |
965 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
966 | } | |
967 | ||
d594a14c | 968 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
969 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
970 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
971 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
972 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 973 | } else { |
2a3f51cf | 974 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
975 | case PMSI_TNLTYPE_INGR_REPL: |
976 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
977 | break; | |
978 | ||
979 | case PMSI_TNLTYPE_PIM_SM: | |
980 | flood_control = VXLAN_FLOOD_PIM_SM; | |
981 | break; | |
982 | ||
983 | default: | |
984 | flood_control = VXLAN_FLOOD_DISABLED; | |
985 | break; | |
986 | } | |
987 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 988 | } |
128ea8ab | 989 | |
d62a17ae | 990 | return ret; |
128ea8ab | 991 | } |
992 | ||
993 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 994 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 995 | const struct prefix_evpn *p, |
d62a17ae | 996 | struct in_addr remote_vtep_ip) |
128ea8ab | 997 | { |
d62a17ae | 998 | int ret; |
128ea8ab | 999 | |
d62a17ae | 1000 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1001 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1002 | 0, 0, 0, NULL); |
1003 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1004 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1005 | else |
b16dd019 AK |
1006 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1007 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1008 | |
d62a17ae | 1009 | return ret; |
128ea8ab | 1010 | } |
1011 | ||
1012 | /* | |
1013 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1014 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1015 | * from peers. | |
1016 | */ | |
d62a17ae | 1017 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1018 | struct bgp_dest *dest, |
9c7edc03 AK |
1019 | struct bgp_path_info *old_local, |
1020 | struct bgp_path_info *new_select) | |
128ea8ab | 1021 | { |
9bcb3eef | 1022 | struct bgp_dest *global_dest; |
40381db7 | 1023 | struct bgp_path_info *pi; |
d62a17ae | 1024 | afi_t afi = AFI_L2VPN; |
1025 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1026 | |
9c7edc03 | 1027 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1028 | char esi_buf[ESI_STR_LEN]; |
1029 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1030 | struct prefix_evpn *evp = |
1031 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1032 | |
2dbe669b DA |
1033 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1034 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1035 | sizeof(esi_buf)), | |
1036 | new_select ? esi_to_str(&new_select->attr->esi, | |
1037 | esi_buf2, sizeof(esi_buf2)) | |
1038 | : ""); | |
9c7edc03 AK |
1039 | } |
1040 | ||
d62a17ae | 1041 | /* Locate route node in the global EVPN routing table. Note that |
1042 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1043 | * L3VPN routes. | |
1044 | */ | |
c44ab6f1 AK |
1045 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1046 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1047 | &vpn->prd); | |
9bcb3eef | 1048 | if (global_dest) { |
d62a17ae | 1049 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1050 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1051 | |
d62a17ae | 1052 | /* Schedule for processing - withdraws to peers happen from |
1053 | * this table. | |
1054 | */ | |
40381db7 | 1055 | if (pi) |
9bcb3eef DS |
1056 | bgp_process(bgp, global_dest, afi, safi); |
1057 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1058 | } |
128ea8ab | 1059 | |
d62a17ae | 1060 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1061 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1062 | } |
1063 | ||
1064 | /* | |
1065 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1066 | * if appropriate. | |
c44ab6f1 | 1067 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1068 | */ |
c44ab6f1 | 1069 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1070 | struct bgp_dest *dest) |
d62a17ae | 1071 | { |
4b7e6066 DS |
1072 | struct bgp_path_info *old_select, *new_select; |
1073 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1074 | afi_t afi = AFI_L2VPN; |
1075 | safi_t safi = SAFI_EVPN; | |
1076 | int ret = 0; | |
1077 | ||
1078 | /* Compute the best path. */ | |
9bcb3eef | 1079 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1080 | afi, safi); |
1081 | old_select = old_and_new.old; | |
1082 | new_select = old_and_new.new; | |
1083 | ||
1084 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1085 | * update to zebra RIB. |
1086 | * Remote routes and SYNC route (i.e. local routes with | |
1087 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1088 | * change. | |
d62a17ae | 1089 | */ |
1090 | if (old_select && old_select == new_select | |
1091 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1092 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1093 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1094 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1095 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1096 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1097 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1098 | ret = evpn_zebra_install( |
9bcb3eef DS |
1099 | bgp, vpn, |
1100 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1101 | dest), | |
d594a14c | 1102 | old_select); |
1defdda8 | 1103 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1104 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1105 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1106 | return ret; |
1107 | } | |
1108 | ||
1109 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1110 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1111 | |
1112 | /* bestpath has changed; update relevant fields and install or uninstall | |
1113 | * into the zebra RIB. | |
1114 | */ | |
1115 | if (old_select || new_select) | |
9bcb3eef | 1116 | bgp_bump_version(dest); |
d62a17ae | 1117 | |
1118 | if (old_select) | |
9bcb3eef | 1119 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1120 | if (new_select) { |
9bcb3eef DS |
1121 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1122 | bgp_path_info_unset_flag(dest, new_select, | |
1123 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1124 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1125 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1126 | } |
1127 | ||
9c7edc03 AK |
1128 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1129 | * to zebra | |
1130 | */ | |
d62a17ae | 1131 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1132 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1133 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1134 | ret = evpn_zebra_install( |
9bcb3eef DS |
1135 | bgp, vpn, |
1136 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1137 | new_select); |
d594a14c | 1138 | |
d62a17ae | 1139 | /* If an old best existed and it was a "local" route, the only |
1140 | * reason | |
1141 | * it would be supplanted is due to MAC mobility procedures. So, | |
1142 | * we | |
1143 | * need to do an implicit delete and withdraw that route from | |
1144 | * peers. | |
1145 | */ | |
9c7edc03 AK |
1146 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1147 | old_select && old_select->peer == bgp->peer_self | |
1148 | && old_select->type == ZEBRA_ROUTE_BGP | |
1149 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1150 | && vpn) | |
1151 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1152 | old_select, new_select); | |
d62a17ae | 1153 | } else { |
1154 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1155 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1156 | ret = evpn_zebra_uninstall( |
1157 | bgp, vpn, | |
9bcb3eef DS |
1158 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1159 | dest), | |
b54892e0 | 1160 | old_select->attr->nexthop); |
d62a17ae | 1161 | } |
1162 | ||
1163 | /* Clear any route change flags. */ | |
9bcb3eef | 1164 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1165 | |
18ee8310 | 1166 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1167 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1168 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1169 | |
1170 | return ret; | |
128ea8ab | 1171 | } |
1172 | ||
9c7edc03 AK |
1173 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1174 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1175 | { |
40381db7 | 1176 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1177 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1178 | |
9bcb3eef | 1179 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1180 | tmp_pi = tmp_pi->next) { |
1181 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1182 | local_pi = tmp_pi; |
9c7edc03 AK |
1183 | break; |
1184 | } | |
d62a17ae | 1185 | } |
c85c03c7 | 1186 | |
9c7edc03 | 1187 | return local_pi; |
c85c03c7 | 1188 | } |
1189 | ||
5e53dce3 | 1190 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1191 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1192 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1193 | struct attr *attr, int *route_changed) |
342dd0c6 | 1194 | { |
1195 | struct attr *attr_new = NULL; | |
40381db7 | 1196 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1197 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1198 | struct bgp_path_info *local_pi = NULL; |
1199 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1200 | |
5424b7ba | 1201 | *route_changed = 0; |
342dd0c6 | 1202 | /* locate the local route entry if any */ |
9bcb3eef | 1203 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1204 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1205 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1206 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1207 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1208 | local_pi = tmp_pi; | |
342dd0c6 | 1209 | } |
1210 | ||
2bb9eff4 | 1211 | /* |
0437e105 | 1212 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1213 | * Otherwise see if route attr has changed |
523cafc4 | 1214 | */ |
40381db7 | 1215 | if (!local_pi) { |
342dd0c6 | 1216 | |
5424b7ba MK |
1217 | /* route has changed as this is the first entry */ |
1218 | *route_changed = 1; | |
1219 | ||
342dd0c6 | 1220 | /* Add (or update) attribute to hash. */ |
1221 | attr_new = bgp_attr_intern(attr); | |
1222 | ||
1223 | /* create the route info from attribute */ | |
40381db7 | 1224 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1225 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1226 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1227 | |
b57ba6d2 | 1228 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1229 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1230 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1231 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1232 | pi->extra->num_labels = 1; | |
342dd0c6 | 1233 | |
1234 | /* add the route entry to route node*/ | |
9bcb3eef | 1235 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1236 | } else { |
1237 | ||
40381db7 DS |
1238 | tmp_pi = local_pi; |
1239 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1240 | |
1241 | /* attribute changed */ | |
1242 | *route_changed = 1; | |
1243 | ||
342dd0c6 | 1244 | /* The attribute has changed. */ |
1245 | /* Add (or update) attribute to hash. */ | |
1246 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1247 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1248 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1249 | |
1250 | /* Restore route, if needed. */ | |
40381db7 | 1251 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1252 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1253 | |
1254 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1255 | bgp_attr_unintern(&tmp_pi->attr); |
1256 | tmp_pi->attr = attr_new; | |
1257 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1258 | } |
1259 | } | |
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | /* update evpn type-5 route entry */ | |
996c9314 | 1264 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1265 | struct attr *src_attr, afi_t src_afi, |
1266 | safi_t src_safi) | |
342dd0c6 | 1267 | { |
1268 | afi_t afi = AFI_L2VPN; | |
1269 | safi_t safi = SAFI_EVPN; | |
1270 | struct attr attr; | |
9bcb3eef | 1271 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1272 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1273 | int route_changed = 0; |
342dd0c6 | 1274 | |
5e53dce3 T |
1275 | bgp_evpn = bgp_get_evpn(); |
1276 | if (!bgp_evpn) | |
faafdfa8 | 1277 | return 0; |
342dd0c6 | 1278 | |
2f69f6d3 | 1279 | /* Build path attribute for this route - use the source attr, if |
1280 | * present, else treat as locally originated. | |
1281 | */ | |
1282 | if (src_attr) | |
6f4f49b2 | 1283 | attr = *src_attr; |
2f69f6d3 | 1284 | else { |
1285 | memset(&attr, 0, sizeof(struct attr)); | |
1286 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1287 | } | |
5394a276 | 1288 | |
5394a276 CS |
1289 | /* Advertise Primary IP (PIP) is enabled, send individual |
1290 | * IP (default instance router-id) as nexthop. | |
1291 | * PIP is disabled or vrr interface is not present | |
27727001 | 1292 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1293 | */ |
1294 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1295 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1296 | attr.nexthop = bgp_vrf->originator_ip; | |
1297 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1298 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1299 | } else { |
27727001 CS |
1300 | /* copy sys rmac */ |
1301 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1302 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1303 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1304 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1305 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1306 | if (bgp_debug_zebra(NULL)) |
1307 | zlog_debug( | |
1308 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1309 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1310 | } |
1311 | ||
c0d72166 DS |
1312 | if (bgp_debug_zebra(NULL)) |
1313 | zlog_debug( | |
1314 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1315 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1316 | &attr.nexthop); | |
5394a276 | 1317 | |
342dd0c6 | 1318 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1319 | |
6c995628 AD |
1320 | if (src_afi == AFI_IP6 && |
1321 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1322 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1323 | if (src_attr && | |
1324 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1325 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1326 | memcpy(&attr.evpn_overlay.gw_ip.ipv6, | |
1327 | &src_attr->mp_nexthop_global, | |
1328 | sizeof(struct in6_addr)); | |
1329 | } | |
1330 | } else if (src_afi == AFI_IP && | |
1331 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1332 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1333 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1334 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1335 | memcpy(&attr.evpn_overlay.gw_ip.ipv4, | |
1336 | &src_attr->nexthop, sizeof(struct in_addr)); | |
1337 | } | |
1338 | } | |
1339 | ||
342dd0c6 | 1340 | /* Setup RT and encap extended community */ |
1341 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1342 | ||
1343 | /* get the route node in global table */ | |
c44ab6f1 AK |
1344 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1345 | (const struct prefix_evpn *)evp, | |
1346 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1347 | assert(dest); |
342dd0c6 | 1348 | |
1349 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1350 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1351 | &route_changed); |
342dd0c6 | 1352 | |
1353 | /* schedule for processing and unlock node */ | |
5424b7ba | 1354 | if (route_changed) { |
9bcb3eef DS |
1355 | bgp_process(bgp_evpn, dest, afi, safi); |
1356 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1357 | } |
342dd0c6 | 1358 | |
1359 | /* uninten temporary */ | |
5ee65f6f | 1360 | if (!src_attr) |
1361 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1362 | return 0; |
1363 | } | |
1364 | ||
9c7edc03 | 1365 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1366 | struct bgp_dest *dest, uint32_t loc_seq, |
1367 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1368 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1369 | { |
1370 | struct bgp_path_info *tmp_pi; | |
1371 | struct bgp_path_info *second_best_path = NULL; | |
1372 | uint32_t tmp_mm_seq = 0; | |
1373 | esi_t *tmp_esi; | |
1374 | int paths_eq; | |
1375 | ||
1376 | /* find the best non-local path. a local path can only be present | |
1377 | * as best path | |
1378 | */ | |
09319b4e DS |
1379 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1380 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1381 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1382 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1383 | continue; | |
1384 | ||
1385 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1386 | second_best_path, &paths_eq)) | |
1387 | second_best_path = tmp_pi; | |
1388 | } | |
1389 | ||
1390 | if (!second_best_path) | |
1391 | return; | |
1392 | ||
1393 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1394 | /* if this has the same ES desination as the local path | |
1395 | * it is a sync path | |
1396 | */ | |
1397 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1398 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1399 | if (tmp_mm_seq < loc_seq) | |
1400 | return; | |
1401 | ||
1402 | /* we have a non-proxy path from the ES peer. */ | |
1403 | if (second_best_path->attr->es_flags & | |
1404 | ATTR_ES_PROXY_ADVERT) { | |
1405 | *proxy_from_peer = true; | |
1406 | } else { | |
1407 | *active_on_peer = true; | |
1408 | } | |
1409 | ||
1410 | if (second_best_path->attr->router_flag) | |
1411 | *peer_router = true; | |
1412 | ||
1413 | /* we use both proxy and non-proxy imports to | |
1414 | * determine the max sync sequence | |
1415 | */ | |
1416 | if (tmp_mm_seq > *max_sync_seq) | |
1417 | *max_sync_seq = tmp_mm_seq; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1422 | * This is need for MM sequence number syncing and proxy advertisement. | |
1423 | * Note: The local path can only exist as a best path in the | |
1424 | * VPN route table. It will take precedence over all sync paths. | |
1425 | */ | |
1426 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1427 | struct bgp_dest *dest, |
1428 | struct attr *attr, | |
1429 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1430 | { |
1431 | esi_t *esi; | |
752eed47 DS |
1432 | struct prefix_evpn *evp = |
1433 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1434 | |
1435 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1436 | return; | |
1437 | ||
1438 | esi = bgp_evpn_attr_get_esi(attr); | |
1439 | if (bgp_evpn_is_esi_valid(esi)) { | |
1440 | if (setup_sync) { | |
1441 | uint32_t max_sync_seq = 0; | |
1442 | bool active_on_peer = false; | |
1443 | bool peer_router = false; | |
1444 | bool proxy_from_peer = false; | |
1445 | ||
09319b4e DS |
1446 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1447 | &max_sync_seq, &active_on_peer, | |
1448 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1449 | attr->mm_sync_seqnum = max_sync_seq; |
1450 | if (active_on_peer) | |
1451 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1452 | else | |
1453 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1454 | if (proxy_from_peer) | |
1455 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1456 | else | |
1457 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1458 | if (peer_router) | |
1459 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1460 | else | |
1461 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1462 | ||
1463 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1464 | char esi_buf[ESI_STR_LEN]; |
1465 | ||
2dbe669b DA |
1466 | zlog_debug( |
1467 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1468 | evp, | |
9c7edc03 | 1469 | esi_to_str(esi, esi_buf, |
2dbe669b | 1470 | sizeof(esi_buf)), |
9c7edc03 | 1471 | max_sync_seq, |
2dbe669b DA |
1472 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1473 | ? "peer-active " | |
1474 | : "", | |
1475 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1476 | ? "peer-proxy " | |
1477 | : "", | |
1478 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1479 | ? "peer-router " | |
1480 | : ""); | |
9c7edc03 AK |
1481 | } |
1482 | } | |
1483 | } else { | |
1484 | attr->mm_sync_seqnum = 0; | |
1485 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1486 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1487 | } | |
1488 | } | |
1489 | ||
128ea8ab | 1490 | /* |
1491 | * Create or update EVPN route entry. This could be in the VNI route table | |
1492 | * or the global route table. | |
1493 | */ | |
d62a17ae | 1494 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1495 | afi_t afi, safi_t safi, |
1496 | struct bgp_dest *dest, struct attr *attr, | |
1497 | int add, struct bgp_path_info **pi, | |
1498 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1499 | bool *old_is_sync) |
d62a17ae | 1500 | { |
40381db7 DS |
1501 | struct bgp_path_info *tmp_pi; |
1502 | struct bgp_path_info *local_pi; | |
d62a17ae | 1503 | struct attr *attr_new; |
b57ba6d2 | 1504 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1505 | uint32_t num_labels = 1; |
d62a17ae | 1506 | int route_change = 1; |
d7c0a89a | 1507 | uint8_t sticky = 0; |
b54892e0 | 1508 | const struct prefix_evpn *evp; |
d62a17ae | 1509 | |
40381db7 | 1510 | *pi = NULL; |
9bcb3eef | 1511 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1512 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1513 | |
f07e1c99 | 1514 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1515 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1516 | |
1517 | /* If route doesn't exist already, create a new one, if told to. | |
1518 | * Otherwise act based on whether the attributes of the route have | |
1519 | * changed or not. | |
1520 | */ | |
40381db7 | 1521 | if (!local_pi && !add) |
d62a17ae | 1522 | return 0; |
1523 | ||
9c7edc03 AK |
1524 | if (old_is_sync && local_pi) |
1525 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1526 | ||
1527 | /* if a local path is being added with a non-zero esi look | |
1528 | * for SYNC paths from ES peers and bubble up the sync-info | |
1529 | */ | |
26c03e43 | 1530 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1531 | |
f07e1c99 | 1532 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1533 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1534 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1535 | |
40381db7 | 1536 | if (!local_pi) { |
d62a17ae | 1537 | /* Add (or update) attribute to hash. */ |
1538 | attr_new = bgp_attr_intern(attr); | |
1539 | ||
1540 | /* Extract MAC mobility sequence number, if any. */ | |
1541 | attr_new->mm_seqnum = | |
1542 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1543 | attr_new->sticky = sticky; | |
1544 | ||
1545 | /* Create new route with its attribute. */ | |
40381db7 | 1546 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1547 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1548 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1549 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1550 | |
1551 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1552 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1553 | |
1554 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1555 | * Only attach second label if we are advertising two labels for | |
1556 | * type-2 routes. | |
1557 | */ | |
996c9314 LB |
1558 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1559 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1560 | vni_t l3vni; |
1561 | ||
1562 | l3vni = bgpevpn_get_l3vni(vpn); | |
1563 | if (l3vni) { | |
1564 | vni2label(l3vni, &label[1]); | |
1565 | num_labels++; | |
1566 | } | |
1567 | } | |
d62a17ae | 1568 | |
40381db7 DS |
1569 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1570 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1571 | /* Mark route as self type-2 route */ |
1572 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1573 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1574 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1575 | } else { |
40381db7 DS |
1576 | tmp_pi = local_pi; |
1577 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1578 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1579 | route_change = 0; |
1580 | else { | |
c48d9f5f MK |
1581 | /* |
1582 | * The attributes have changed, type-2 routes needs to | |
1583 | * be advertised with right labels. | |
1584 | */ | |
1585 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1586 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1587 | && CHECK_FLAG(vpn->flags, | |
1588 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1589 | vni_t l3vni; |
1590 | ||
1591 | l3vni = bgpevpn_get_l3vni(vpn); | |
1592 | if (l3vni) { | |
1593 | vni2label(l3vni, &label[1]); | |
1594 | num_labels++; | |
1595 | } | |
1596 | } | |
40381db7 DS |
1597 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1598 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1599 | |
d62a17ae | 1600 | /* The attribute has changed. */ |
1601 | /* Add (or update) attribute to hash. */ | |
1602 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1603 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1604 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1605 | |
f07e1c99 | 1606 | /* Extract MAC mobility sequence number, if any. */ |
1607 | attr_new->mm_seqnum = | |
1608 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1609 | attr_new->sticky = sticky; | |
1610 | ||
d62a17ae | 1611 | /* Restore route, if needed. */ |
40381db7 | 1612 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1613 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1614 | |
1615 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1616 | bgp_attr_unintern(&tmp_pi->attr); |
1617 | tmp_pi->attr = attr_new; | |
1618 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1619 | } |
1620 | } | |
1621 | ||
58bff4d1 AK |
1622 | /* local MAC-IP routes in the VNI table are linked to |
1623 | * the destination ES | |
26c03e43 AK |
1624 | */ |
1625 | if (route_change && vpn_rt | |
1626 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1627 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1628 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1629 | ||
d62a17ae | 1630 | /* Return back the route entry. */ |
40381db7 | 1631 | *pi = tmp_pi; |
d62a17ae | 1632 | return route_change; |
128ea8ab | 1633 | } |
1634 | ||
ec0ab544 | 1635 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1636 | struct bgpevpn *vpn, |
1637 | struct bgp_dest *dest) | |
ec0ab544 AK |
1638 | { |
1639 | struct bgp_path_info *tmp_ri; | |
1640 | struct bgp_path_info *curr_select = NULL; | |
1641 | ||
9bcb3eef DS |
1642 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1643 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1644 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1645 | curr_select = tmp_ri; | |
1646 | break; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1651 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1652 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1653 | evpn_zebra_install(bgp, vpn, | |
1654 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1655 | curr_select); | |
ec0ab544 AK |
1656 | } |
1657 | ||
6d8c603a AK |
1658 | /* |
1659 | * If the local route was not selected evict it and tell zebra to re-add | |
1660 | * the best remote dest. | |
1661 | * | |
1662 | * Typically a local path added by zebra is expected to be selected as | |
1663 | * best. In which case when a remote path wins as best (later) | |
1664 | * evpn_route_select_install itself evicts the older-local-best path. | |
1665 | * | |
1666 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1667 | * is possible that the local path is no longer the "older" best path. | |
1668 | * It is a path that was never designated as best and hence requires | |
1669 | * additional handling to prevent bgp from injecting and holding on to a | |
1670 | * non-best local path. | |
1671 | */ | |
1672 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1673 | struct bgpevpn *vpn, | |
9bcb3eef | 1674 | struct bgp_dest *dest, |
9a8897aa | 1675 | struct bgp_path_info *local_pi) |
6d8c603a | 1676 | { |
6d8c603a | 1677 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1678 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1679 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1680 | dest); |
b54892e0 | 1681 | |
9c7edc03 | 1682 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1683 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1684 | |
1685 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1686 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1687 | } |
1688 | ||
70524092 AK |
1689 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1690 | const struct prefix_evpn *p, | |
1691 | esi_t *esi) | |
1692 | { | |
1693 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1694 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1695 | || (is_evpn_prefix_ipaddr_v6(p) |
1696 | && !IN6_IS_ADDR_LINKLOCAL( | |
1697 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1698 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1699 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1700 | } | |
1701 | ||
128ea8ab | 1702 | /* |
1703 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1704 | * and schedule for processing. | |
1705 | */ | |
d62a17ae | 1706 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1707 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1708 | uint32_t seq, esi_t *esi) |
128ea8ab | 1709 | { |
9bcb3eef | 1710 | struct bgp_dest *dest; |
d62a17ae | 1711 | struct attr attr; |
1712 | struct attr *attr_new; | |
1ec31309 | 1713 | int add_l3_ecomm = 0; |
40381db7 | 1714 | struct bgp_path_info *pi; |
d62a17ae | 1715 | afi_t afi = AFI_L2VPN; |
1716 | safi_t safi = SAFI_EVPN; | |
1717 | int route_change; | |
9c7edc03 | 1718 | bool old_is_sync = false; |
128ea8ab | 1719 | |
d62a17ae | 1720 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1721 | |
d62a17ae | 1722 | /* Build path-attribute for this route. */ |
1723 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1724 | attr.nexthop = vpn->originator_ip; | |
1725 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1726 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1727 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1728 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1729 | attr.router_flag = CHECK_FLAG(flags, |
1730 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1731 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1732 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1733 | ||
1734 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1735 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1736 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1737 | } | |
1738 | ||
be41eb68 | 1739 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1740 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1741 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1742 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1743 | } |
be41eb68 | 1744 | |
9c7edc03 | 1745 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1746 | char buf3[ESI_STR_LEN]; |
1747 | ||
23d0a753 | 1748 | zlog_debug( |
c0d72166 | 1749 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1750 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1751 | : " ", | |
c0d72166 | 1752 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1753 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1754 | } |
1ec31309 | 1755 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1756 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1757 | uint8_t af_flags = 0; | |
1758 | ||
1759 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1760 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1761 | ||
1762 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1763 | } |
1764 | ||
a21bd7a3 | 1765 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1766 | |
1ec31309 | 1767 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1768 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1769 | * these routes. | |
1770 | */ | |
70524092 AK |
1771 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1772 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1773 | |
1774 | /* Set up extended community. */ | |
1775 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1776 | |
d62a17ae | 1777 | /* First, create (or fetch) route node within the VNI. */ |
1778 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1779 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1780 | |
d62a17ae | 1781 | /* Create or update route entry. */ |
9bcb3eef | 1782 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1783 | 1, &pi, flags, seq, |
1784 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1785 | assert(pi); |
1786 | attr_new = pi->attr; | |
128ea8ab | 1787 | |
6d8c603a AK |
1788 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1789 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1790 | |
1791 | /* Perform route selection. Normally, the local route in the | |
1792 | * VNI is expected to win and be the best route. However, if | |
1793 | * there is a race condition where a host moved from local to | |
1794 | * remote and the remote route was received in BGP just prior | |
1795 | * to the local MACIP notification from zebra, the remote | |
1796 | * route would win, and we should evict the defunct local route | |
1797 | * and (re)install the remote route into zebra. | |
1798 | */ | |
9bcb3eef | 1799 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1800 | /* |
9a8897aa AK |
1801 | * If the new local route was not selected evict it and tell zebra |
1802 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1803 | * routes. | |
6d8c603a | 1804 | */ |
9c7edc03 | 1805 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1806 | route_change = 0; |
9c7edc03 AK |
1807 | } else { |
1808 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1809 | route_change = 0; | |
1810 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1811 | } else { | |
1812 | bool new_is_sync; | |
1813 | ||
1814 | /* If the local path already existed and is still the | |
1815 | * best path we need to also check if it transitioned | |
1816 | * from being a sync path to a non-sync path. If it | |
1817 | * it did we need to notify zebra that the sync-path | |
1818 | * has been removed. | |
1819 | */ | |
1820 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1821 | if (!new_is_sync && old_is_sync) | |
1822 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1823 | } | |
9a8897aa | 1824 | } |
6d8c603a AK |
1825 | bgp_path_info_unlock(pi); |
1826 | ||
9bcb3eef | 1827 | bgp_dest_unlock_node(dest); |
128ea8ab | 1828 | |
d62a17ae | 1829 | /* If this is a new route or some attribute has changed, export the |
1830 | * route to the global table. The route will be advertised to peers | |
1831 | * from there. Note that this table is a 2-level tree (RD-level + | |
1832 | * Prefix-level) similar to L3VPN routes. | |
1833 | */ | |
1834 | if (route_change) { | |
40381db7 | 1835 | struct bgp_path_info *global_pi; |
128ea8ab | 1836 | |
c44ab6f1 AK |
1837 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1838 | (const struct prefix_evpn *)p, | |
1839 | &vpn->prd); | |
9bcb3eef | 1840 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1841 | &global_pi, flags, seq, |
1842 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1843 | |
d62a17ae | 1844 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1845 | bgp_process(bgp, dest, afi, safi); |
1846 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1847 | } |
128ea8ab | 1848 | |
d62a17ae | 1849 | /* Unintern temporary. */ |
1850 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1851 | |
d62a17ae | 1852 | return 0; |
128ea8ab | 1853 | } |
1854 | ||
50f74cf1 | 1855 | /* |
1856 | * Delete EVPN route entry. | |
1857 | * The entry can be in ESI/VNI table or the global table. | |
1858 | */ | |
185fb14a | 1859 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1860 | struct bgp_dest *dest, |
40381db7 | 1861 | struct bgp_path_info **pi) |
342dd0c6 | 1862 | { |
40381db7 | 1863 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1864 | |
40381db7 | 1865 | *pi = NULL; |
342dd0c6 | 1866 | |
50f74cf1 | 1867 | /* Now, find matching route. */ |
9bcb3eef | 1868 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1869 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1870 | if (tmp_pi->peer == bgp->peer_self |
1871 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1872 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1873 | break; |
1874 | ||
40381db7 | 1875 | *pi = tmp_pi; |
342dd0c6 | 1876 | |
1877 | /* Mark route for delete. */ | |
40381db7 | 1878 | if (tmp_pi) |
9bcb3eef | 1879 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1880 | } |
1881 | ||
1882 | /* Delete EVPN type5 route */ | |
996c9314 | 1883 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1884 | { |
1885 | afi_t afi = AFI_L2VPN; | |
1886 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1887 | struct bgp_dest *dest = NULL; |
40381db7 | 1888 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1889 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1890 | |
5e53dce3 T |
1891 | bgp_evpn = bgp_get_evpn(); |
1892 | if (!bgp_evpn) | |
faafdfa8 | 1893 | return 0; |
342dd0c6 | 1894 | |
1895 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1896 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1897 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1898 | if (!dest) |
342dd0c6 | 1899 | return 0; |
1900 | ||
9bcb3eef | 1901 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1902 | if (pi) |
9bcb3eef DS |
1903 | bgp_process(bgp_evpn, dest, afi, safi); |
1904 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1905 | return 0; |
1906 | } | |
1907 | ||
128ea8ab | 1908 | /* |
1909 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1910 | * schedule for processing. | |
1911 | */ | |
d62a17ae | 1912 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1913 | struct prefix_evpn *p) | |
1914 | { | |
9bcb3eef | 1915 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1916 | struct bgp_path_info *pi; |
d62a17ae | 1917 | afi_t afi = AFI_L2VPN; |
1918 | safi_t safi = SAFI_EVPN; | |
1919 | ||
1920 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1921 | * there | |
1922 | * is nothing further to do. | |
1923 | */ | |
1924 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1925 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1926 | if (!dest) | |
d62a17ae | 1927 | return 0; |
1928 | ||
1929 | /* Next, locate route node in the global EVPN routing table. Note that | |
1930 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1931 | * L3VPN routes. | |
1932 | */ | |
c44ab6f1 AK |
1933 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1934 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1935 | if (global_dest) { |
d62a17ae | 1936 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1937 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1938 | |
1939 | /* Schedule for processing - withdraws to peers happen from | |
1940 | * this table. | |
1941 | */ | |
40381db7 | 1942 | if (pi) |
9bcb3eef DS |
1943 | bgp_process(bgp, global_dest, afi, safi); |
1944 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1945 | } |
1946 | ||
1947 | /* Delete route entry in the VNI route table. This can just be removed. | |
1948 | */ | |
9bcb3eef | 1949 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1950 | if (pi) { |
9bcb3eef DS |
1951 | bgp_path_info_reap(dest, pi); |
1952 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1953 | } |
9bcb3eef | 1954 | bgp_dest_unlock_node(dest); |
d62a17ae | 1955 | |
1956 | return 0; | |
128ea8ab | 1957 | } |
1958 | ||
70524092 AK |
1959 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1960 | struct bgp_dest *dest, | |
1961 | struct bgp_path_info *local_pi, | |
1962 | const char *caller) | |
9c7edc03 AK |
1963 | { |
1964 | afi_t afi = AFI_L2VPN; | |
1965 | safi_t safi = SAFI_EVPN; | |
1966 | struct bgp_path_info *pi; | |
1967 | struct attr attr; | |
1968 | struct attr *attr_new; | |
1969 | uint32_t seq; | |
1970 | int add_l3_ecomm = 0; | |
09319b4e | 1971 | struct bgp_dest *global_dest; |
9c7edc03 | 1972 | struct bgp_path_info *global_pi; |
752eed47 DS |
1973 | struct prefix_evpn *evp = |
1974 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1975 | int route_change; |
1976 | bool old_is_sync = false; | |
1977 | ||
1978 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1979 | return; | |
1980 | ||
1981 | /* | |
1982 | * Build attribute per local route as the MAC mobility and | |
1983 | * some other values could differ for different routes. The | |
1984 | * attributes will be shared in the hash table. | |
1985 | */ | |
1986 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1987 | attr.nexthop = vpn->originator_ip; | |
1988 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1989 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1990 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1991 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1992 | attr.es_flags = local_pi->attr->es_flags; | |
1993 | if (local_pi->attr->default_gw) { | |
1994 | attr.default_gw = 1; | |
1995 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1996 | attr.router_flag = 1; | |
1997 | } | |
1998 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1999 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
2000 | local_pi->extra->af_flags); | |
2001 | vni2label(vpn->vni, &(attr.label)); | |
2002 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2003 | * using L3 VNI for type-2 routes also. | |
2004 | */ | |
70524092 AK |
2005 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2006 | vpn, evp, | |
2007 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2008 | |
2009 | /* Set up extended community. */ | |
2010 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2011 | seq = mac_mobility_seqnum(local_pi->attr); | |
2012 | ||
2013 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2014 | char buf3[ESI_STR_LEN]; |
2015 | ||
23d0a753 | 2016 | zlog_debug( |
c0d72166 | 2017 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2018 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2019 | : " ", | |
c0d72166 | 2020 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2021 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2022 | attr.es_flags, caller); | |
9c7edc03 AK |
2023 | } |
2024 | ||
2025 | /* Update the route entry. */ | |
09319b4e DS |
2026 | route_change = update_evpn_route_entry( |
2027 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2028 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2029 | |
2030 | assert(pi); | |
2031 | attr_new = pi->attr; | |
2032 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2033 | bgp_path_info_lock(pi); | |
2034 | ||
2035 | /* Perform route selection. Normally, the local route in the | |
2036 | * VNI is expected to win and be the best route. However, | |
2037 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2038 | * that causes best selection to be based on next hop), a | |
2039 | * remote route could win. If the local route is the best, | |
2040 | * ensure it is updated in the global EVPN route table and | |
2041 | * advertised to peers; otherwise, ensure it is evicted and | |
2042 | * (re)install the remote route into zebra. | |
2043 | */ | |
09319b4e | 2044 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2045 | |
2046 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2047 | route_change = 0; | |
2048 | } else { | |
2049 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2050 | route_change = 0; | |
09319b4e | 2051 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2052 | } else { |
2053 | bool new_is_sync; | |
2054 | ||
2055 | /* If the local path already existed and is still the | |
2056 | * best path we need to also check if it transitioned | |
2057 | * from being a sync path to a non-sync path. If it | |
2058 | * it did we need to notify zebra that the sync-path | |
2059 | * has been removed. | |
2060 | */ | |
2061 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2062 | if (!new_is_sync && old_is_sync) | |
2063 | evpn_zebra_uninstall(bgp, vpn, | |
2064 | evp, zero_vtep_ip); | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | ||
2069 | /* unlock pi */ | |
2070 | bgp_path_info_unlock(pi); | |
2071 | ||
2072 | if (route_change) { | |
2073 | /* Update route in global routing table. */ | |
09319b4e DS |
2074 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2075 | safi, evp, &vpn->prd); | |
2076 | assert(global_dest); | |
2077 | update_evpn_route_entry( | |
2078 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2079 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2080 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2081 | |
2082 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2083 | bgp_process(bgp, global_dest, afi, safi); |
2084 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2085 | } |
2086 | ||
2087 | /* Unintern temporary. */ | |
2088 | aspath_unintern(&attr.aspath); | |
2089 | } | |
2090 | ||
128ea8ab | 2091 | /* |
2092 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2093 | * be scheduled for advertise to peers. | |
2094 | */ | |
d62a17ae | 2095 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2096 | { | |
9bcb3eef | 2097 | struct bgp_dest *dest; |
9c7edc03 | 2098 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2099 | |
2100 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2101 | * routes updated, update corresponding entry in the global table too. | |
2102 | */ | |
9bcb3eef | 2103 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2104 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2105 | const struct prefix_evpn *evp = |
2106 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2107 | |
2108 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2109 | continue; | |
2110 | ||
f07e1c99 | 2111 | /* Identify local route. */ |
9bcb3eef | 2112 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2113 | tmp_pi = tmp_pi->next) { |
40381db7 | 2114 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2115 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2116 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2117 | break; |
7ec156a9 | 2118 | } |
d62a17ae | 2119 | |
40381db7 | 2120 | if (!tmp_pi) |
d62a17ae | 2121 | continue; |
2122 | ||
9c7edc03 AK |
2123 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2124 | __func__); | |
f07e1c99 | 2125 | } |
d62a17ae | 2126 | |
2127 | return 0; | |
128ea8ab | 2128 | } |
2129 | ||
2130 | /* | |
2131 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2132 | * global routing table. These are also scheduled for withdraw from peers. | |
2133 | */ | |
d62a17ae | 2134 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2135 | { |
d62a17ae | 2136 | afi_t afi; |
2137 | safi_t safi; | |
9bcb3eef | 2138 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2139 | struct bgp_table *table; |
40381db7 | 2140 | struct bgp_path_info *pi; |
128ea8ab | 2141 | |
d62a17ae | 2142 | afi = AFI_L2VPN; |
2143 | safi = SAFI_EVPN; | |
128ea8ab | 2144 | |
9bcb3eef DS |
2145 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2146 | (struct prefix *)&vpn->prd); | |
2147 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2148 | table = bgp_dest_get_bgp_table_info(rddest); | |
2149 | for (dest = bgp_table_top(table); dest; | |
2150 | dest = bgp_route_next(dest)) { | |
2151 | const struct prefix_evpn *evp = | |
2152 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2153 | dest); | |
128ea8ab | 2154 | |
d62a17ae | 2155 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2156 | continue; | |
128ea8ab | 2157 | |
9bcb3eef | 2158 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2159 | if (pi) |
9bcb3eef | 2160 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2161 | } |
2162 | } | |
128ea8ab | 2163 | |
d62a17ae | 2164 | /* Unlock RD node. */ |
9bcb3eef DS |
2165 | if (rddest) |
2166 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2167 | |
d62a17ae | 2168 | return 0; |
128ea8ab | 2169 | } |
2170 | ||
2171 | /* | |
2172 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2173 | * table as well as the per-VNI route table. | |
2174 | */ | |
d62a17ae | 2175 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2176 | { |
d62a17ae | 2177 | afi_t afi; |
2178 | safi_t safi; | |
9bcb3eef | 2179 | struct bgp_dest *dest; |
40381db7 | 2180 | struct bgp_path_info *pi; |
128ea8ab | 2181 | |
d62a17ae | 2182 | afi = AFI_L2VPN; |
2183 | safi = SAFI_EVPN; | |
128ea8ab | 2184 | |
d62a17ae | 2185 | /* First, walk the global route table for this VNI's type-2 local |
2186 | * routes. | |
2187 | * EVPN routes are a 2-level table, first get the RD table. | |
2188 | */ | |
2189 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2190 | |
d62a17ae | 2191 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2192 | for (dest = bgp_table_top(vpn->route_table); dest; |
2193 | dest = bgp_route_next(dest)) { | |
2194 | const struct prefix_evpn *evp = | |
2195 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2196 | |
d62a17ae | 2197 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2198 | continue; | |
128ea8ab | 2199 | |
9bcb3eef | 2200 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2201 | |
d62a17ae | 2202 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2203 | if (pi) |
9bcb3eef | 2204 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2205 | } |
128ea8ab | 2206 | |
d62a17ae | 2207 | return 0; |
128ea8ab | 2208 | } |
2209 | ||
2210 | /* | |
2211 | * Delete all routes in the per-VNI route table. | |
2212 | */ | |
d62a17ae | 2213 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2214 | { |
9bcb3eef | 2215 | struct bgp_dest *dest; |
40381db7 | 2216 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2217 | |
d62a17ae | 2218 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2219 | for (dest = bgp_table_top(vpn->route_table); dest; |
2220 | dest = bgp_route_next(dest)) { | |
2221 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2222 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2223 | bgp_path_info_delete(dest, pi); |
2224 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2225 | } |
2226 | } | |
128ea8ab | 2227 | |
d62a17ae | 2228 | return 0; |
128ea8ab | 2229 | } |
2230 | ||
833b8a50 AK |
2231 | /* BUM traffic flood mode per-l2-vni */ |
2232 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2233 | struct bgpevpn *vpn) | |
2234 | { | |
2235 | /* if flooding has been globally disabled per-vni mode is | |
2236 | * not relevant | |
2237 | */ | |
2238 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2239 | return VXLAN_FLOOD_DISABLED; | |
2240 | ||
2241 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2242 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2243 | return VXLAN_FLOOD_PIM_SM; | |
2244 | ||
2245 | /* default is ingress replication */ | |
2246 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2247 | } | |
2248 | ||
128ea8ab | 2249 | /* |
2250 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2251 | * export RT getting modified or change to tunnel IP. Note that these | |
2252 | * situations need the route in the per-VNI table as well as the global | |
2253 | * table to be updated (as attributes change). | |
2254 | */ | |
0ca10580 | 2255 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2256 | { |
d62a17ae | 2257 | int ret; |
2258 | struct prefix_evpn p; | |
128ea8ab | 2259 | |
9c49ac74 AD |
2260 | update_type1_routes_for_evi(bgp, vpn); |
2261 | ||
d62a17ae | 2262 | /* Update and advertise the type-3 route (only one) followed by the |
2263 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2264 | * |
2265 | * RT-3 only if doing head-end replication | |
d62a17ae | 2266 | */ |
833b8a50 AK |
2267 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2268 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2269 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2270 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2271 | if (ret) |
2272 | return ret; | |
2273 | } | |
128ea8ab | 2274 | |
d62a17ae | 2275 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2276 | } |
2277 | ||
2278 | /* | |
2279 | * Delete (and withdraw) local routes for specified VNI from the global | |
2280 | * table and per-VNI table. After this, remove all other routes from | |
2281 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2282 | * (advertise-all-vni) being disabled. | |
2283 | */ | |
d62a17ae | 2284 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2285 | { |
d62a17ae | 2286 | int ret; |
2287 | struct prefix_evpn p; | |
128ea8ab | 2288 | |
d62a17ae | 2289 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2290 | * followed by type-3 routes (only one) - for this VNI. | |
2291 | */ | |
2292 | ret = delete_all_type2_routes(bgp, vpn); | |
2293 | if (ret) | |
2294 | return ret; | |
128ea8ab | 2295 | |
d62a17ae | 2296 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2297 | ret = delete_evpn_route(bgp, vpn, &p); | |
2298 | if (ret) | |
2299 | return ret; | |
128ea8ab | 2300 | |
d62a17ae | 2301 | /* Delete all routes from the per-VNI table. */ |
2302 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2303 | } |
2304 | ||
76d07c7a AK |
2305 | /* |
2306 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2307 | * remove the type-3 route if any. A new type-3 route will be generated | |
2308 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2309 | */ | |
2310 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2311 | struct in_addr mcast_grp) | |
2312 | { | |
2313 | struct prefix_evpn p; | |
2314 | ||
2315 | vpn->mcast_grp = mcast_grp; | |
2316 | ||
2317 | if (is_vni_live(vpn)) { | |
2318 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2319 | delete_evpn_route(bgp, vpn, &p); | |
2320 | } | |
2321 | ||
2322 | return 0; | |
2323 | } | |
2324 | ||
128ea8ab | 2325 | /* |
d1911c26 | 2326 | * There is a tunnel endpoint IP address change for this VNI, delete |
2327 | * prior type-3 route (if needed) and update. | |
2328 | * Note: Route re-advertisement happens elsewhere after other processing | |
2329 | * other changes. | |
128ea8ab | 2330 | */ |
d62a17ae | 2331 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2332 | struct in_addr originator_ip) | |
128ea8ab | 2333 | { |
d62a17ae | 2334 | struct prefix_evpn p; |
128ea8ab | 2335 | |
ddd16ed5 MK |
2336 | /* If VNI is not live, we only need to update the originator ip */ |
2337 | if (!is_vni_live(vpn)) { | |
2338 | vpn->originator_ip = originator_ip; | |
2339 | return 0; | |
2340 | } | |
2341 | ||
db0e1937 MK |
2342 | /* Update the tunnel-ip hash */ |
2343 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2344 | bgp_tip_add(bgp, &originator_ip); | |
2345 | ||
2346 | /* filter routes as martian nexthop db has changed */ | |
2347 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2348 | ||
d62a17ae | 2349 | /* Need to withdraw type-3 route as the originator IP is part |
2350 | * of the key. | |
2351 | */ | |
2352 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2353 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2354 | |
d62a17ae | 2355 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2356 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2357 | return 0; |
185fb14a | 2358 | } |
50f74cf1 | 2359 | |
185fb14a AK |
2360 | static struct bgp_path_info * |
2361 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2362 | struct bgp_dest *dest, struct attr *attr) | |
2363 | { | |
2364 | struct attr *attr_new; | |
2365 | struct bgp_path_info *pi; | |
50f74cf1 | 2366 | |
185fb14a AK |
2367 | /* Add (or update) attribute to hash. */ |
2368 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2369 | |
185fb14a AK |
2370 | /* Create new route with its attribute. */ |
2371 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2372 | attr_new, dest); | |
2373 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2374 | bgp_path_info_extra_get(pi); | |
2375 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2376 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2377 | if (parent_pi->extra) { | |
2378 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2379 | sizeof(pi->extra->label)); | |
2380 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2381 | } |
185fb14a | 2382 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2383 | |
185fb14a | 2384 | return pi; |
50f74cf1 | 2385 | } |
2386 | ||
d3135ba3 | 2387 | /* |
2388 | * Install route entry into the VRF routing table and invoke route selection. | |
2389 | */ | |
2390 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2391 | const struct prefix_evpn *evp, |
40381db7 | 2392 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2393 | { |
9bcb3eef | 2394 | struct bgp_dest *dest; |
40381db7 | 2395 | struct bgp_path_info *pi; |
1ec31309 | 2396 | struct attr attr; |
d3135ba3 | 2397 | struct attr *attr_new; |
c4edf708 | 2398 | int ret = 0; |
d3135ba3 | 2399 | struct prefix p; |
2400 | struct prefix *pp = &p; | |
2401 | afi_t afi = 0; | |
2402 | safi_t safi = 0; | |
5f0c5ec8 | 2403 | bool new_pi = false; |
58bff4d1 AK |
2404 | bool use_l3nhg = false; |
2405 | bool is_l3nhg_active = false; | |
a2299aba | 2406 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2407 | |
2408 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2409 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2410 | |
2dbe669b | 2411 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2412 | zlog_debug( |
2dbe669b DA |
2413 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2414 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2415 | parent_pi->flags); | |
1eb88002 | 2416 | |
d3135ba3 | 2417 | /* Create (or fetch) route within the VRF. */ |
2418 | /* NOTE: There is no RD here. */ | |
3714a385 | 2419 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2420 | afi = AFI_IP; |
2421 | safi = SAFI_UNICAST; | |
9bcb3eef | 2422 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2423 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2424 | afi = AFI_IP6; |
2425 | safi = SAFI_UNICAST; | |
9bcb3eef | 2426 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2427 | } else |
2428 | return 0; | |
2429 | ||
1ec31309 | 2430 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2431 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2432 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2433 | * address for the rest of the code to flow through. In the case of IPv4, | |
2434 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2435 | */ |
6f4f49b2 | 2436 | attr = *parent_pi->attr; |
a2299aba AD |
2437 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2438 | if (afi == AFI_IP6) | |
2439 | evpn_convert_nexthop_to_ipv6(&attr); | |
2440 | else | |
2441 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2442 | } else { | |
2443 | ||
2444 | /* | |
2445 | * If gateway IP overlay index is specified in the NLRI of | |
2446 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2447 | * for the prefix in the VRF | |
2448 | */ | |
2449 | if (bgp_debug_zebra(NULL)) { | |
2450 | zlog_debug( | |
2451 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2452 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2453 | buf1, sizeof(buf1)), pp, | |
2454 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2455 | } | |
2456 | ||
2457 | if (afi == AFI_IP6) { | |
2458 | memcpy(&attr.mp_nexthop_global, | |
2459 | &attr.evpn_overlay.gw_ip.ipv6, | |
2460 | sizeof(struct in6_addr)); | |
2461 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2462 | } else { | |
2463 | attr.nexthop = attr.evpn_overlay.gw_ip.ipv4; | |
2464 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2465 | } | |
2466 | } | |
1ec31309 | 2467 | |
58bff4d1 AK |
2468 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2469 | &is_l3nhg_active, NULL); | |
2470 | if (use_l3nhg) | |
2471 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2472 | if (is_l3nhg_active) | |
2473 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2474 | ||
d3135ba3 | 2475 | /* Check if route entry is already present. */ |
9bcb3eef | 2476 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2477 | if (pi->extra |
2478 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2479 | break; |
2480 | ||
5f0c5ec8 | 2481 | if (!pi) { |
9bcb3eef | 2482 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2483 | new_pi = true; |
2484 | } else { | |
40381db7 DS |
2485 | if (attrhash_cmp(pi->attr, &attr) |
2486 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2487 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2488 | return 0; |
2489 | } | |
2490 | /* The attribute has changed. */ | |
2491 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2492 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2493 | |
2494 | /* Restore route, if needed. */ | |
40381db7 | 2495 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2496 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2497 | |
2498 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2499 | if ((afi == AFI_IP |
2500 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2501 | || (afi == AFI_IP6 | |
2502 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2503 | &attr_new->mp_nexthop_global))) | |
2504 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2505 | |
9bcb3eef | 2506 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2507 | /* Unintern existing, set to new. */ |
40381db7 DS |
2508 | bgp_attr_unintern(&pi->attr); |
2509 | pi->attr = attr_new; | |
2510 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2511 | } |
a2299aba AD |
2512 | |
2513 | /* Gateway IP nexthop should be resolved */ | |
2514 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2515 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
2516 | NULL, 0)) | |
2517 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); | |
2518 | else { | |
2519 | if (BGP_DEBUG(nht, NHT)) { | |
2520 | inet_ntop(pp->family, | |
2521 | &attr.evpn_overlay.gw_ip, | |
2522 | buf1, sizeof(buf1)); | |
2523 | zlog_debug("%s: gateway IP NH unresolved", | |
2524 | buf1); | |
2525 | } | |
2526 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2527 | } | |
2528 | } else { | |
2529 | ||
2530 | /* as it is an importation, change nexthop */ | |
2531 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2532 | } | |
d3135ba3 | 2533 | |
090efa2f AK |
2534 | /* Link path to evpn nexthop */ |
2535 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2536 | ||
9bcb3eef | 2537 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2538 | safi); |
b49cdf4c | 2539 | |
d3135ba3 | 2540 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2541 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2542 | |
7452e879 | 2543 | /* Process for route leaking. */ |
2544 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2545 | ||
9bcb3eef | 2546 | bgp_dest_unlock_node(dest); |
3c11d70a | 2547 | |
5f0c5ec8 | 2548 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2549 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2550 | new_pi ? "new" : "update", dest, | |
2551 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2552 | pi->flags); | |
5f0c5ec8 | 2553 | |
d3135ba3 | 2554 | return ret; |
2555 | } | |
2556 | ||
128ea8ab | 2557 | /* |
2558 | * Install route entry into the VNI routing table and invoke route selection. | |
2559 | */ | |
d62a17ae | 2560 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2561 | const struct prefix_evpn *p, |
40381db7 | 2562 | struct bgp_path_info *parent_pi) |
d62a17ae | 2563 | { |
9bcb3eef | 2564 | struct bgp_dest *dest; |
40381db7 | 2565 | struct bgp_path_info *pi; |
9c7edc03 | 2566 | struct bgp_path_info *local_pi; |
d62a17ae | 2567 | struct attr *attr_new; |
2568 | int ret; | |
c44ab6f1 | 2569 | struct prefix_evpn ad_evp; |
74efb822 AK |
2570 | bool old_local_es = false; |
2571 | bool new_local_es; | |
c44ab6f1 AK |
2572 | |
2573 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2574 | * we need to create a different copy for the VNI | |
2575 | */ | |
2576 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2577 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2578 | parent_pi->attr->nexthop); | |
d62a17ae | 2579 | |
2580 | /* Create (or fetch) route within the VNI. */ | |
2581 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2582 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2583 | |
2584 | /* Check if route entry is already present. */ | |
9bcb3eef | 2585 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2586 | if (pi->extra |
2587 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2588 | break; |
2589 | ||
bd0254af MS |
2590 | if (!pi) { |
2591 | /* Create an info */ | |
26c03e43 | 2592 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2593 | parent_pi->attr); |
74efb822 | 2594 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2595 | } else { |
40381db7 DS |
2596 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2597 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2598 | bgp_dest_unlock_node(dest); |
d62a17ae | 2599 | return 0; |
2600 | } | |
2601 | /* The attribute has changed. */ | |
2602 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2603 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2604 | |
50f74cf1 | 2605 | /* Restore route, if needed. */ |
40381db7 | 2606 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2607 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2608 | |
2609 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2610 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2611 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2612 | |
74efb822 AK |
2613 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2614 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2615 | /* If ESI is different or if its type has changed we | |
2616 | * need to reinstall the path in zebra | |
2617 | */ | |
2618 | if ((old_local_es != new_local_es) | |
2619 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2620 | sizeof(attr_new->esi))) { | |
2621 | ||
2622 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2623 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2624 | vpn->vni, &pi->net->p, | |
2625 | new_local_es ? "local" | |
2626 | : "non-local"); | |
2627 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2628 | } | |
2629 | ||
50f74cf1 | 2630 | /* Unintern existing, set to new. */ |
40381db7 DS |
2631 | bgp_attr_unintern(&pi->attr); |
2632 | pi->attr = attr_new; | |
2633 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2634 | } |
2635 | ||
2636 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2637 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2638 | |
9c7edc03 AK |
2639 | /* if the best path is a local path with a non-zero ES |
2640 | * sync info against the local path may need to be updated | |
2641 | * when a remote path is added/updated (including changes | |
2642 | * from sync-path to remote-path) | |
2643 | */ | |
2644 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2645 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2646 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2647 | __func__); |
9bcb3eef | 2648 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2649 | |
50f74cf1 | 2650 | return ret; |
2651 | } | |
2652 | ||
d3135ba3 | 2653 | /* |
2654 | * Uninstall route entry from the VRF routing table and send message | |
2655 | * to zebra, if appropriate. | |
2656 | */ | |
2657 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2658 | const struct prefix_evpn *evp, |
40381db7 | 2659 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2660 | { |
9bcb3eef | 2661 | struct bgp_dest *dest; |
40381db7 | 2662 | struct bgp_path_info *pi; |
c4edf708 | 2663 | int ret = 0; |
d3135ba3 | 2664 | struct prefix p; |
2665 | struct prefix *pp = &p; | |
2666 | afi_t afi = 0; | |
2667 | safi_t safi = 0; | |
2668 | ||
2669 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2670 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2671 | |
2dbe669b | 2672 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2673 | zlog_debug( |
2dbe669b DA |
2674 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2675 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2676 | parent_pi->flags); | |
1eb88002 | 2677 | |
d3135ba3 | 2678 | /* Locate route within the VRF. */ |
2679 | /* NOTE: There is no RD here. */ | |
3714a385 | 2680 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2681 | afi = AFI_IP; |
2682 | safi = SAFI_UNICAST; | |
9bcb3eef | 2683 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2684 | } else { |
2685 | afi = AFI_IP6; | |
2686 | safi = SAFI_UNICAST; | |
9bcb3eef | 2687 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2688 | } |
2689 | ||
9bcb3eef | 2690 | if (!dest) |
d3135ba3 | 2691 | return 0; |
2692 | ||
2693 | /* Find matching route entry. */ | |
9bcb3eef | 2694 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2695 | if (pi->extra |
2696 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2697 | break; |
2698 | ||
40381db7 | 2699 | if (!pi) |
d3135ba3 | 2700 | return 0; |
2701 | ||
5f0c5ec8 | 2702 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2703 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2704 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2705 | pi->flags); | |
5f0c5ec8 | 2706 | |
7452e879 | 2707 | /* Process for route leaking. */ |
2708 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2709 | ||
9bcb3eef | 2710 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2711 | safi); |
4c7a11d5 | 2712 | |
d3135ba3 | 2713 | /* Mark entry for deletion */ |
9bcb3eef | 2714 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2715 | |
090efa2f AK |
2716 | /* Unlink path to evpn nexthop */ |
2717 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2718 | ||
d3135ba3 | 2719 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2720 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2721 | |
2722 | /* Unlock route node. */ | |
9bcb3eef | 2723 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2724 | |
2725 | return ret; | |
2726 | } | |
2727 | ||
128ea8ab | 2728 | /* |
2729 | * Uninstall route entry from the VNI routing table and send message | |
2730 | * to zebra, if appropriate. | |
2731 | */ | |
d62a17ae | 2732 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2733 | const struct prefix_evpn *p, |
40381db7 | 2734 | struct bgp_path_info *parent_pi) |
128ea8ab | 2735 | { |
9bcb3eef | 2736 | struct bgp_dest *dest; |
40381db7 | 2737 | struct bgp_path_info *pi; |
9c7edc03 | 2738 | struct bgp_path_info *local_pi; |
d62a17ae | 2739 | int ret; |
c44ab6f1 AK |
2740 | struct prefix_evpn ad_evp; |
2741 | ||
2742 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2743 | * we need to create a different copy for the VNI | |
2744 | */ | |
2745 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2746 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2747 | parent_pi->attr->nexthop); | |
128ea8ab | 2748 | |
d62a17ae | 2749 | /* Locate route within the VNI. */ |
2750 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2751 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2752 | if (!dest) | |
d62a17ae | 2753 | return 0; |
128ea8ab | 2754 | |
d62a17ae | 2755 | /* Find matching route entry. */ |
9bcb3eef | 2756 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2757 | if (pi->extra |
2758 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2759 | break; |
128ea8ab | 2760 | |
40381db7 | 2761 | if (!pi) |
d62a17ae | 2762 | return 0; |
128ea8ab | 2763 | |
d62a17ae | 2764 | /* Mark entry for deletion */ |
9bcb3eef | 2765 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2766 | |
d62a17ae | 2767 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2768 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2769 | |
9c7edc03 AK |
2770 | /* if the best path is a local path with a non-zero ES |
2771 | * sync info against the local path may need to be updated | |
2772 | * when a remote path is deleted | |
2773 | */ | |
2774 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2775 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2776 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2777 | __func__); | |
2778 | ||
d62a17ae | 2779 | /* Unlock route node. */ |
9bcb3eef | 2780 | bgp_dest_unlock_node(dest); |
128ea8ab | 2781 | |
d62a17ae | 2782 | return ret; |
128ea8ab | 2783 | } |
2784 | ||
5ba238b7 MK |
2785 | /* |
2786 | * Given a route entry and a VRF, see if this route entry should be | |
2787 | * imported into the VRF i.e., RTs match. | |
2788 | */ | |
4b7e6066 | 2789 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2790 | struct bgp_path_info *pi) |
5ba238b7 | 2791 | { |
40381db7 | 2792 | struct attr *attr = pi->attr; |
5ba238b7 | 2793 | struct ecommunity *ecom; |
f6e07e1b | 2794 | uint32_t i; |
5ba238b7 MK |
2795 | |
2796 | assert(attr); | |
2797 | /* Route should have valid RT to be even considered. */ | |
2798 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2799 | return 0; | |
2800 | ||
2801 | ecom = attr->ecommunity; | |
2802 | if (!ecom || !ecom->size) | |
2803 | return 0; | |
2804 | ||
2805 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2806 | * matches, we're done. | |
2807 | */ | |
2808 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2809 | uint8_t *pnt; |
2810 | uint8_t type, sub_type; | |
5ba238b7 MK |
2811 | struct ecommunity_val *eval; |
2812 | struct ecommunity_val eval_tmp; | |
2813 | struct vrf_irt_node *irt; | |
2814 | ||
2815 | /* Only deal with RTs */ | |
34540b0d | 2816 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2817 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2818 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2819 | type = *pnt++; |
2820 | sub_type = *pnt++; | |
2821 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2822 | continue; | |
2823 | ||
2824 | /* See if this RT matches specified VNIs import RTs */ | |
2825 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2826 | if (irt) |
5ba238b7 MK |
2827 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2828 | return 1; | |
2829 | ||
2830 | /* Also check for non-exact match. In this, we mask out the AS | |
2831 | * and | |
2832 | * only check on the local-admin sub-field. This is to | |
2833 | * facilitate using | |
2834 | * VNI as the RT for EBGP peering too. | |
2835 | */ | |
2836 | irt = NULL; | |
2837 | if (type == ECOMMUNITY_ENCODE_AS | |
2838 | || type == ECOMMUNITY_ENCODE_AS4 | |
2839 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2840 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2841 | mask_ecom_global_admin(&eval_tmp, eval); |
2842 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2843 | } | |
5d9cbca2 | 2844 | if (irt) |
5ba238b7 MK |
2845 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2846 | return 1; | |
2847 | } | |
2848 | ||
2849 | return 0; | |
2850 | } | |
2851 | ||
128ea8ab | 2852 | /* |
2853 | * Given a route entry and a VNI, see if this route entry should be | |
2854 | * imported into the VNI i.e., RTs match. | |
2855 | */ | |
d62a17ae | 2856 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2857 | struct bgp_path_info *pi) |
d62a17ae | 2858 | { |
40381db7 | 2859 | struct attr *attr = pi->attr; |
d62a17ae | 2860 | struct ecommunity *ecom; |
f6e07e1b | 2861 | uint32_t i; |
d62a17ae | 2862 | |
2863 | assert(attr); | |
2864 | /* Route should have valid RT to be even considered. */ | |
2865 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2866 | return 0; | |
2867 | ||
2868 | ecom = attr->ecommunity; | |
2869 | if (!ecom || !ecom->size) | |
2870 | return 0; | |
2871 | ||
2872 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2873 | * matches, we're done. | |
2874 | */ | |
2875 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2876 | uint8_t *pnt; |
2877 | uint8_t type, sub_type; | |
d62a17ae | 2878 | struct ecommunity_val *eval; |
2879 | struct ecommunity_val eval_tmp; | |
2880 | struct irt_node *irt; | |
2881 | ||
2882 | /* Only deal with RTs */ | |
34540b0d | 2883 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2884 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2885 | + (i * ecom->unit_size)); |
d62a17ae | 2886 | type = *pnt++; |
2887 | sub_type = *pnt++; | |
2888 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2889 | continue; | |
2890 | ||
2891 | /* See if this RT matches specified VNIs import RTs */ | |
2892 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2893 | if (irt) |
d62a17ae | 2894 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2895 | return 1; | |
2896 | ||
2897 | /* Also check for non-exact match. In this, we mask out the AS | |
2898 | * and | |
2899 | * only check on the local-admin sub-field. This is to | |
2900 | * facilitate using | |
2901 | * VNI as the RT for EBGP peering too. | |
2902 | */ | |
2903 | irt = NULL; | |
2904 | if (type == ECOMMUNITY_ENCODE_AS | |
2905 | || type == ECOMMUNITY_ENCODE_AS4 | |
2906 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2907 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2908 | mask_ecom_global_admin(&eval_tmp, eval); |
2909 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2910 | } | |
b1ab0dfe | 2911 | if (irt) |
d62a17ae | 2912 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2913 | return 1; | |
2914 | } | |
2915 | ||
2916 | return 0; | |
128ea8ab | 2917 | } |
2918 | ||
47bf0432 CS |
2919 | /* This API will scan evpn routes for checking attribute's rmac |
2920 | * macthes with bgp instance router mac. It avoid installing | |
2921 | * route into bgp vrf table and remote rmac in bridge table. | |
2922 | */ | |
2923 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2924 | const struct prefix_evpn *evp, |
47bf0432 CS |
2925 | struct bgp_path_info *pi) |
2926 | { | |
2927 | /* evpn route could have learnt prior to L3vni has come up, | |
2928 | * perform rmac check before installing route and | |
2929 | * remote router mac. | |
2930 | * The route will be removed from global bgp table once | |
2931 | * SVI comes up with MAC and stored in hash, triggers | |
2932 | * bgp_mac_rescan_all_evpn_tables. | |
2933 | */ | |
05864da7 | 2934 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2935 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2936 | char attr_str[BUFSIZ] = {0}; |
2937 | ||
5022c833 | 2938 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2939 | |
2dbe669b DA |
2940 | zlog_debug( |
2941 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2942 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2943 | } |
2944 | ||
2945 | return 1; | |
2946 | } | |
2947 | ||
2948 | return 0; | |
2949 | } | |
2950 | ||
bbc57c6c AK |
2951 | /* don't import hosts that are locally attached */ |
2952 | static inline bool | |
36dd4574 AK |
2953 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2954 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2955 | struct bgp_path_info *pi, int install) |
2956 | { | |
26c03e43 | 2957 | esi_t *esi; |
bbc57c6c | 2958 | |
26c03e43 AK |
2959 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2960 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2961 | ||
2962 | /* Don't import routes that point to a local destination */ | |
2963 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2964 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2965 | char esi_buf[ESI_STR_LEN]; | |
2966 | ||
2967 | zlog_debug( | |
2968 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2969 | install ? "import" : "unimport", evp, | |
2970 | esi_to_str(esi, esi_buf, | |
2971 | sizeof(esi_buf))); | |
2972 | } | |
2973 | return true; | |
2974 | } | |
58bff4d1 AK |
2975 | } |
2976 | return false; | |
2977 | } | |
26c03e43 | 2978 | |
58bff4d1 AK |
2979 | /* |
2980 | * Install or uninstall a mac-ip route in the provided vrf if | |
2981 | * there is a rt match | |
2982 | */ | |
2983 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
2984 | struct bgp_path_info *pi, | |
2985 | int install) | |
2986 | { | |
2987 | int ret = 0; | |
2988 | const struct prefix_evpn *evp = | |
2989 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
2990 | ||
2991 | /* Consider "valid" remote routes applicable for | |
2992 | * this VRF. | |
2993 | */ | |
2994 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
2995 | && pi->type == ZEBRA_ROUTE_BGP | |
2996 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
2997 | return 0; | |
2998 | ||
58bff4d1 AK |
2999 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3000 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3001 | return 0; | |
3002 | ||
74efb822 AK |
3003 | /* don't import hosts that are locally attached */ |
3004 | if (install | |
3005 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
3006 | install)) | |
58bff4d1 | 3007 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3008 | else |
58bff4d1 AK |
3009 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3010 | pi); | |
26c03e43 | 3011 | |
58bff4d1 AK |
3012 | if (ret) |
3013 | flog_err(EC_BGP_EVPN_FAIL, | |
3014 | "Failed to %s EVPN %pFX route in VRF %s", | |
3015 | install ? "install" : "uninstall", evp, | |
3016 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3017 | } |
58bff4d1 AK |
3018 | |
3019 | return ret; | |
bbc57c6c AK |
3020 | } |
3021 | ||
5ba238b7 MK |
3022 | /* |
3023 | * Install or uninstall mac-ip routes are appropriate for this | |
3024 | * particular VRF. | |
3025 | */ | |
996c9314 | 3026 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3027 | { |
3028 | afi_t afi; | |
3029 | safi_t safi; | |
9bcb3eef | 3030 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3031 | struct bgp_table *table; |
40381db7 | 3032 | struct bgp_path_info *pi; |
5ba238b7 | 3033 | int ret; |
5e53dce3 | 3034 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3035 | |
3036 | afi = AFI_L2VPN; | |
3037 | safi = SAFI_EVPN; | |
5e53dce3 T |
3038 | bgp_evpn = bgp_get_evpn(); |
3039 | if (!bgp_evpn) | |
5ba238b7 MK |
3040 | return -1; |
3041 | ||
3042 | /* Walk entire global routing table and evaluate routes which could be | |
3043 | * imported into this VRF. Note that we need to loop through all global | |
3044 | * routes to determine which route matches the import rt on vrf | |
3045 | */ | |
9bcb3eef DS |
3046 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3047 | rd_dest = bgp_route_next(rd_dest)) { | |
3048 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3049 | if (!table) |
3050 | continue; | |
3051 | ||
9bcb3eef DS |
3052 | for (dest = bgp_table_top(table); dest; |
3053 | dest = bgp_route_next(dest)) { | |
3054 | const struct prefix_evpn *evp = | |
3055 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3056 | dest); | |
5ba238b7 | 3057 | |
1eb88002 | 3058 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3059 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3060 | || evp->prefix.route_type | |
3061 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3062 | continue; |
3063 | ||
1eb88002 | 3064 | /* if not a mac+ip route skip this route */ |
3714a385 | 3065 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3066 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3067 | continue; |
3068 | ||
9bcb3eef | 3069 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3070 | pi = pi->next) { |
58bff4d1 AK |
3071 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3072 | bgp_vrf, pi, install); | |
3073 | if (ret) | |
3074 | return ret; | |
5ba238b7 MK |
3075 | } |
3076 | } | |
3077 | } | |
3078 | ||
3079 | return 0; | |
3080 | } | |
3081 | ||
128ea8ab | 3082 | /* |
3083 | * Install or uninstall routes of specified type that are appropriate for this | |
3084 | * particular VNI. | |
3085 | */ | |
d62a17ae | 3086 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3087 | struct bgpevpn *vpn, | |
3088 | bgp_evpn_route_type rtype, | |
3089 | int install) | |
3090 | { | |
0291c246 MK |
3091 | afi_t afi; |
3092 | safi_t safi; | |
9bcb3eef | 3093 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3094 | struct bgp_table *table; |
40381db7 | 3095 | struct bgp_path_info *pi; |
0291c246 | 3096 | int ret; |
d62a17ae | 3097 | |
3098 | afi = AFI_L2VPN; | |
3099 | safi = SAFI_EVPN; | |
3100 | ||
3101 | /* Walk entire global routing table and evaluate routes which could be | |
3102 | * imported into this VPN. Note that we cannot just look at the routes | |
3103 | * for | |
3104 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3105 | * RD. | |
3106 | */ | |
3107 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3108 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3109 | rd_dest = bgp_route_next(rd_dest)) { | |
3110 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3111 | if (!table) |
3112 | continue; | |
3113 | ||
9bcb3eef DS |
3114 | for (dest = bgp_table_top(table); dest; |
3115 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3116 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3117 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3118 | dest); | |
d62a17ae | 3119 | |
3120 | if (evp->prefix.route_type != rtype) | |
3121 | continue; | |
3122 | ||
9bcb3eef | 3123 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3124 | pi = pi->next) { |
d62a17ae | 3125 | /* Consider "valid" remote routes applicable for |
3126 | * this VNI. */ | |
40381db7 DS |
3127 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3128 | && pi->type == ZEBRA_ROUTE_BGP | |
3129 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3130 | continue; |
3131 | ||
40381db7 | 3132 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3133 | if (install) |
3134 | ret = install_evpn_route_entry( | |
40381db7 | 3135 | bgp, vpn, evp, pi); |
d62a17ae | 3136 | else |
3137 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3138 | bgp, vpn, evp, pi); |
d62a17ae | 3139 | |
3140 | if (ret) { | |
af4c2728 | 3141 | flog_err( |
e50f7cfd | 3142 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3143 | "%u: Failed to %s EVPN %s route in VNI %u", |
3144 | bgp->vrf_id, | |
3145 | install ? "install" | |
3146 | : "uninstall", | |
3147 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3148 | ? "MACIP" | |
3149 | : "IMET", | |
3150 | vpn->vni); | |
dc52bece DS |
3151 | |
3152 | bgp_dest_unlock_node(rd_dest); | |
3153 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3154 | return ret; |
3155 | } | |
3156 | } | |
3157 | } | |
3158 | } | |
3159 | } | |
3160 | ||
3161 | return 0; | |
128ea8ab | 3162 | } |
3163 | ||
5ba238b7 | 3164 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3165 | * is invoked upon l3vni-add or l3vni import rt change |
3166 | */ | |
5ba238b7 MK |
3167 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3168 | { | |
3169 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3170 | return 0; | |
3171 | } | |
3172 | ||
128ea8ab | 3173 | /* |
3174 | * Install any existing remote routes applicable for this VNI into its | |
3175 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3176 | * RT is changed. | |
3177 | */ | |
d62a17ae | 3178 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3179 | { |
d62a17ae | 3180 | int ret; |
128ea8ab | 3181 | |
d62a17ae | 3182 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3183 | * for this VNI. | |
3184 | */ | |
3185 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3186 | 1); | |
3187 | if (ret) | |
3188 | return ret; | |
128ea8ab | 3189 | |
c44ab6f1 AK |
3190 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3191 | 1); | |
3192 | if (ret) | |
3193 | return ret; | |
3194 | ||
d62a17ae | 3195 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3196 | 1); | |
128ea8ab | 3197 | } |
3198 | ||
5ba238b7 MK |
3199 | /* uninstall routes from l3vni vrf. */ |
3200 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3201 | { | |
3202 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3203 | return 0; | |
3204 | } | |
3205 | ||
90e60aa7 | 3206 | /* |
3207 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3208 | * this is invoked is upon an import RT change. | |
3209 | */ | |
d62a17ae | 3210 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3211 | { |
d62a17ae | 3212 | int ret; |
90e60aa7 | 3213 | |
d62a17ae | 3214 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3215 | * applicable | |
3216 | * for this VNI. | |
3217 | */ | |
3218 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3219 | 0); | |
3220 | if (ret) | |
3221 | return ret; | |
90e60aa7 | 3222 | |
c44ab6f1 | 3223 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3224 | 0); |
c44ab6f1 AK |
3225 | if (ret) |
3226 | return ret; | |
3227 | ||
3228 | ||
d62a17ae | 3229 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3230 | 0); | |
90e60aa7 | 3231 | } |
3232 | ||
d3135ba3 | 3233 | /* |
3234 | * Install or uninstall route in matching VRFs (list). | |
3235 | */ | |
3236 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3237 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3238 | struct bgp_path_info *pi, |
d3135ba3 | 3239 | struct list *vrfs, int install) |
3240 | { | |
d3135ba3 | 3241 | struct bgp *bgp_vrf; |
3242 | struct listnode *node, *nnode; | |
3243 | ||
90264d64 | 3244 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3245 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3246 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3247 | return 0; |
3248 | ||
90264d64 | 3249 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3250 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3251 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3252 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3253 | return 0; |
3254 | ||
d3135ba3 | 3255 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3256 | int ret; | |
3257 | ||
36dd4574 | 3258 | /* don't import hosts that are locally attached */ |
74efb822 AK |
3259 | if (install |
3260 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
3261 | install)) | |
40381db7 | 3262 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3263 | else |
996c9314 | 3264 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3265 | pi); |
d3135ba3 | 3266 | |
3267 | if (ret) { | |
e50f7cfd | 3268 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3269 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3270 | bgp_def->vrf_id, |
2dbe669b | 3271 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3272 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3273 | return ret; |
3274 | } | |
3275 | } | |
3276 | ||
3277 | return 0; | |
3278 | } | |
3279 | ||
128ea8ab | 3280 | /* |
3281 | * Install or uninstall route in matching VNIs (list). | |
3282 | */ | |
d62a17ae | 3283 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3284 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3285 | struct bgp_path_info *pi, |
d62a17ae | 3286 | struct list *vnis, int install) |
128ea8ab | 3287 | { |
d62a17ae | 3288 | struct bgpevpn *vpn; |
3289 | struct listnode *node, *nnode; | |
128ea8ab | 3290 | |
d62a17ae | 3291 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3292 | int ret; | |
128ea8ab | 3293 | |
d62a17ae | 3294 | if (!is_vni_live(vpn)) |
3295 | continue; | |
128ea8ab | 3296 | |
d62a17ae | 3297 | if (install) |
40381db7 | 3298 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3299 | else |
40381db7 | 3300 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3301 | |
d62a17ae | 3302 | if (ret) { |
1c50c1c0 QY |
3303 | flog_err(EC_BGP_EVPN_FAIL, |
3304 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3305 | bgp->vrf_id, install ? "install" : "uninstall", | |
3306 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3307 | ? "MACIP" | |
3308 | : "IMET", | |
3309 | vpn->vni); | |
d62a17ae | 3310 | return ret; |
3311 | } | |
3312 | } | |
128ea8ab | 3313 | |
d62a17ae | 3314 | return 0; |
128ea8ab | 3315 | } |
3316 | ||
3317 | /* | |
50f74cf1 | 3318 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3319 | */ |
26c03e43 AK |
3320 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3321 | safi_t safi, const struct prefix *p, | |
3322 | struct bgp_path_info *pi, | |
3323 | int import, bool in_vni_rt, | |
3324 | bool in_vrf_rt) | |
d62a17ae | 3325 | { |
3326 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3327 | struct attr *attr = pi->attr; |
d62a17ae | 3328 | struct ecommunity *ecom; |
f6e07e1b | 3329 | uint32_t i; |
c44ab6f1 | 3330 | struct prefix_evpn ad_evp; |
d62a17ae | 3331 | |
3332 | assert(attr); | |
3333 | ||
50f74cf1 | 3334 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3335 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3336 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3337 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3338 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3339 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3340 | return 0; |
3341 | ||
3342 | /* If we don't have Route Target, nothing much to do. */ | |
3343 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3344 | return 0; | |
3345 | ||
c44ab6f1 AK |
3346 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3347 | * we need to create a different copy for the VNI | |
3348 | */ | |
3349 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3350 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3351 | ||
d62a17ae | 3352 | ecom = attr->ecommunity; |
3353 | if (!ecom || !ecom->size) | |
3354 | return -1; | |
3355 | ||
50f74cf1 | 3356 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3357 | * attached to the route */ | |
d62a17ae | 3358 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3359 | uint8_t *pnt; |
3360 | uint8_t type, sub_type; | |
d62a17ae | 3361 | struct ecommunity_val *eval; |
3362 | struct ecommunity_val eval_tmp; | |
996c9314 | 3363 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3364 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3365 | struct bgp_evpn_es *es; |
d62a17ae | 3366 | |
3367 | /* Only deal with RTs */ | |
34540b0d | 3368 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3369 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3370 | + (i * ecom->unit_size)); |
d62a17ae | 3371 | type = *pnt++; |
3372 | sub_type = *pnt++; | |
3373 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3374 | continue; | |
3375 | ||
58bff4d1 AK |
3376 | /* non-local MAC-IP routes in the global route table are linked |
3377 | * to the destination ES | |
3378 | */ | |
3379 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3380 | bgp_evpn_path_es_link(pi, 0, | |
3381 | bgp_evpn_attr_get_esi(pi->attr)); | |
3382 | ||
50f74cf1 | 3383 | /* |
3384 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3385 | * IMET route is imported into VNI table. | |
3386 | * prefix routes are imported into VRF table. | |
523cafc4 | 3387 | */ |
50f74cf1 | 3388 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3389 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3390 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3391 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3392 | |
26c03e43 | 3393 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3394 | if (irt) |
40381db7 DS |
3395 | install_uninstall_route_in_vnis( |
3396 | bgp, afi, safi, evp, pi, irt->vnis, | |
3397 | import); | |
50f74cf1 | 3398 | |
26c03e43 | 3399 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3400 | if (vrf_irt) |
40381db7 DS |
3401 | install_uninstall_route_in_vrfs( |
3402 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3403 | import); | |
50f74cf1 | 3404 | |
3405 | /* Also check for non-exact match. | |
3406 | * In this, we mask out the AS and | |
3407 | * only check on the local-admin sub-field. | |
3408 | * This is to facilitate using | |
3409 | * VNI as the RT for EBGP peering too. | |
3410 | */ | |
3411 | irt = NULL; | |
3412 | vrf_irt = NULL; | |
3413 | if (type == ECOMMUNITY_ENCODE_AS | |
3414 | || type == ECOMMUNITY_ENCODE_AS4 | |
3415 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3416 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3417 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3418 | if (in_vni_rt) |
3419 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3420 | if (in_vrf_rt) | |
3421 | vrf_irt = | |
3422 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3423 | } |
3424 | ||
3425 | if (irt) | |
40381db7 DS |
3426 | install_uninstall_route_in_vnis( |
3427 | bgp, afi, safi, evp, pi, irt->vnis, | |
3428 | import); | |
50f74cf1 | 3429 | if (vrf_irt) |
40381db7 DS |
3430 | install_uninstall_route_in_vrfs( |
3431 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3432 | import); | |
50f74cf1 | 3433 | } |
3434 | ||
3435 | /* es route is imported into the es table */ | |
3436 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3437 | ||
3438 | /* we will match based on the entire esi to avoid | |
3439 | * imoort of an es route for esi2 into esi1 | |
3440 | */ | |
c44ab6f1 | 3441 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3442 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3443 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3444 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3445 | } |
d62a17ae | 3446 | } |
3447 | ||
3448 | return 0; | |
128ea8ab | 3449 | } |
3450 | ||
26c03e43 AK |
3451 | /* |
3452 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3453 | */ | |
3454 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3455 | const struct prefix *p, | |
3456 | struct bgp_path_info *pi, int import) | |
3457 | { | |
3458 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3459 | true, true); | |
3460 | } | |
3461 | ||
74efb822 AK |
3462 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3463 | { | |
3464 | struct bgp *bgp_evpn; | |
3465 | ||
3466 | bgp_evpn = bgp_get_evpn(); | |
3467 | if (!bgp_evpn) | |
3468 | return; | |
3469 | ||
3470 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3471 | &pi->net->p, pi, import); | |
3472 | } | |
3473 | ||
26c03e43 AK |
3474 | /* Import the pi into vrf routing tables */ |
3475 | void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import) | |
3476 | { | |
3477 | struct bgp *bgp_evpn; | |
3478 | ||
3479 | bgp_evpn = bgp_get_evpn(); | |
3480 | if (!bgp_evpn) | |
3481 | return; | |
3482 | ||
3483 | bgp_evpn_install_uninstall_table(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3484 | &pi->net->p, pi, import, false /*vpn*/, | |
3485 | true /*vrf*/); | |
3486 | } | |
3487 | ||
2bb9eff4 DS |
3488 | /* |
3489 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3490 | * routes | |
3491 | */ | |
80b140af MK |
3492 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3493 | { | |
5fd9c12b KA |
3494 | /* Delete ipv4 default route and withdraw from peers */ |
3495 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3496 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3497 | SAFI_UNICAST, false); | |
3498 | ||
80b140af | 3499 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3500 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3501 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3502 | |
5fd9c12b KA |
3503 | /* Delete ipv6 default route and withdraw from peers */ |
3504 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3505 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3506 | SAFI_UNICAST, false); | |
3507 | ||
80b140af | 3508 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3509 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3510 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3511 | } |
3512 | ||
2bb9eff4 DS |
3513 | /* |
3514 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3515 | * routes | |
3516 | */ | |
5394a276 | 3517 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3518 | { |
5394a276 CS |
3519 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3520 | ||
3521 | bgp_evpn = bgp_get_evpn(); | |
3522 | if (!bgp_evpn) | |
3523 | return; | |
3524 | ||
80b140af | 3525 | /* update all ipv4 routes */ |
fdf19f06 MK |
3526 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3527 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3528 | |
5fd9c12b KA |
3529 | /* update ipv4 default route and withdraw from peers */ |
3530 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3531 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3532 | SAFI_UNICAST, true); | |
3533 | ||
80b140af | 3534 | /* update all ipv6 routes */ |
fdf19f06 MK |
3535 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3536 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3537 | |
3538 | /* update ipv6 default route and withdraw from peers */ | |
3539 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3540 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3541 | SAFI_UNICAST, true); | |
3542 | ||
80b140af MK |
3543 | } |
3544 | ||
676f83b9 | 3545 | /* |
3546 | * update and advertise local routes for a VRF as type-5 routes. | |
3547 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3548 | * done in the global route table using the routes which already exist in the | |
3549 | * VRF routing table | |
3550 | */ | |
80b140af | 3551 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3552 | { |
80b140af MK |
3553 | /* skip if the RD is configured */ |
3554 | if (is_vrf_rd_configured(bgp_vrf)) | |
3555 | return; | |
3556 | ||
3557 | /* derive the RD for the VRF based on new router-id */ | |
3558 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3559 | ||
3560 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3561 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3562 | } |
3563 | ||
3564 | /* | |
3565 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3566 | * This is invoked upon VRF RD change. The processing is done only from global | |
3567 | * table. | |
3568 | */ | |
80b140af | 3569 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3570 | { |
80b140af MK |
3571 | /* skip if the RD is configured */ |
3572 | if (is_vrf_rd_configured(bgp_vrf)) | |
3573 | return; | |
3574 | ||
3575 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3576 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3577 | } |
3578 | ||
90e60aa7 | 3579 | /* |
3580 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3581 | * change. Note that the processing is done only on the global route table | |
3582 | * using routes that already exist in the per-VNI table. | |
3583 | */ | |
d62a17ae | 3584 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3585 | { | |
3586 | struct prefix_evpn p; | |
9bcb3eef | 3587 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3588 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3589 | struct attr *attr; |
3590 | afi_t afi = AFI_L2VPN; | |
3591 | safi_t safi = SAFI_EVPN; | |
3592 | ||
3593 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3594 | * attributes to create and advertise the type-3 route for this VNI | |
3595 | * in the global table. | |
fd069644 DS |
3596 | * |
3597 | * RT-3 only if doing head-end replication | |
d62a17ae | 3598 | */ |
833b8a50 AK |
3599 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3600 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3601 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3602 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3603 | if (!dest) /* unexpected */ | |
fd069644 | 3604 | return 0; |
9bcb3eef | 3605 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3606 | if (pi->peer == bgp->peer_self && |
3607 | pi->type == ZEBRA_ROUTE_BGP | |
3608 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3609 | break; | |
3610 | if (!pi) /* unexpected */ | |
3611 | return 0; | |
3612 | attr = pi->attr; | |
d62a17ae | 3613 | |
9c7edc03 AK |
3614 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3615 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3616 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3617 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3618 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3619 | |
fd069644 | 3620 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3621 | bgp_process(bgp, global_dest, afi, safi); |
3622 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3623 | } |
d62a17ae | 3624 | |
3625 | /* Now, walk this VNI's route table and use the route and its attribute | |
3626 | * to create and schedule route in global table. | |
3627 | */ | |
9bcb3eef DS |
3628 | for (dest = bgp_table_top(vpn->route_table); dest; |
3629 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3630 | const struct prefix_evpn *evp = |
9bcb3eef | 3631 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3632 | |
d60f63f0 AD |
3633 | /* |
3634 | * We have already processed type-3 routes. | |
3635 | * Process only type-1 and type-2 routes here. | |
3636 | */ | |
3637 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3638 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3639 | continue; |
3640 | ||
9bcb3eef | 3641 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3642 | if (pi->peer == bgp->peer_self |
3643 | && pi->type == ZEBRA_ROUTE_BGP | |
3644 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3645 | break; |
40381db7 | 3646 | if (!pi) |
d62a17ae | 3647 | continue; |
3648 | ||
3649 | /* Create route in global routing table using this route entry's | |
3650 | * attribute. | |
3651 | */ | |
40381db7 | 3652 | attr = pi->attr; |
c44ab6f1 | 3653 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3654 | evp, &vpn->prd); |
9bcb3eef | 3655 | assert(global_dest); |
d60f63f0 AD |
3656 | |
3657 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3658 | /* Type-2 route */ | |
3659 | update_evpn_route_entry( | |
3660 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3661 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3662 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3663 | } else { |
3664 | /* Type-1 route */ | |
3665 | struct bgp_evpn_es *es; | |
3666 | int route_changed = 0; | |
3667 | ||
3668 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3669 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
3670 | global_dest, attr, 1, | |
3671 | &global_pi, &route_changed); | |
3672 | } | |
d62a17ae | 3673 | |
3674 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3675 | bgp_process(bgp, global_dest, afi, safi); |
3676 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3677 | } |
3678 | ||
3679 | return 0; | |
90e60aa7 | 3680 | } |
3681 | ||
3682 | /* | |
3683 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3684 | * table. Invoked upon router-id change. | |
3685 | */ | |
d62a17ae | 3686 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3687 | { |
d62a17ae | 3688 | int ret; |
3689 | struct prefix_evpn p; | |
9bcb3eef | 3690 | struct bgp_dest *global_dest; |
40381db7 | 3691 | struct bgp_path_info *pi; |
d62a17ae | 3692 | afi_t afi = AFI_L2VPN; |
3693 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3694 | |
d62a17ae | 3695 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3696 | * for this VNI - from the global table. | |
3697 | */ | |
3698 | ret = delete_global_type2_routes(bgp, vpn); | |
3699 | if (ret) | |
3700 | return ret; | |
90e60aa7 | 3701 | |
d62a17ae | 3702 | /* Remove type-3 route for this VNI from global table. */ |
3703 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3704 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3705 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3706 | if (global_dest) { |
d62a17ae | 3707 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3708 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3709 | |
d62a17ae | 3710 | /* Schedule for processing - withdraws to peers happen from |
3711 | * this table. | |
3712 | */ | |
40381db7 | 3713 | if (pi) |
9bcb3eef DS |
3714 | bgp_process(bgp, global_dest, afi, safi); |
3715 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3716 | } |
90e60aa7 | 3717 | |
d60f63f0 AD |
3718 | |
3719 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3720 | return 0; |
90e60aa7 | 3721 | } |
3722 | ||
2d48ee25 | 3723 | /* |
3724 | * Handle router-id change. Update and advertise local routes corresponding | |
3725 | * to this VNI from peers. Note that this is invoked after updating the | |
3726 | * router-id. The routes in the per-VNI table are used to create routes in | |
3727 | * the global table and schedule them. | |
3728 | */ | |
e3b78da8 | 3729 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3730 | { |
e3b78da8 | 3731 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3732 | |
d62a17ae | 3733 | /* Skip VNIs with configured RD. */ |
3734 | if (is_rd_configured(vpn)) | |
3735 | return; | |
2d48ee25 | 3736 | |
d62a17ae | 3737 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3738 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3739 | } |
3740 | ||
3741 | /* | |
3742 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3743 | * to this VNI from peers. Note that this is invoked prior to updating | |
3744 | * the router-id and is done only on the global route table, the routes | |
3745 | * are needed in the per-VNI table to re-advertise with new router id. | |
3746 | */ | |
e3b78da8 | 3747 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3748 | { |
e3b78da8 | 3749 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3750 | |
d62a17ae | 3751 | /* Skip VNIs with configured RD. */ |
3752 | if (is_rd_configured(vpn)) | |
3753 | return; | |
2d48ee25 | 3754 | |
d62a17ae | 3755 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3756 | } |
3757 | ||
fd069644 DS |
3758 | /* |
3759 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3760 | * This is invoked upon flooding mode changing to head-end replication. | |
3761 | */ | |
e3b78da8 | 3762 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3763 | { |
e3b78da8 | 3764 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3765 | struct bgp *bgp = data; |
3766 | struct prefix_evpn p; | |
3767 | ||
833b8a50 AK |
3768 | if (!vpn || !is_vni_live(vpn) || |
3769 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3770 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3771 | return; |
3772 | ||
3773 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3774 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3775 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3776 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3777 | } | |
3778 | ||
3779 | /* | |
3780 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3781 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3782 | */ | |
e3b78da8 | 3783 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3784 | { |
e3b78da8 | 3785 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3786 | struct bgp *bgp = data; |
3787 | struct prefix_evpn p; | |
3788 | ||
3789 | if (!vpn || !is_vni_live(vpn)) | |
3790 | return; | |
3791 | ||
3792 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3793 | delete_evpn_route(bgp, vpn, &p); | |
3794 | } | |
3795 | ||
128ea8ab | 3796 | /* |
3797 | * Process received EVPN type-2 route (advertise or withdraw). | |
3798 | */ | |
d62a17ae | 3799 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3800 | struct attr *attr, uint8_t *pfx, int psize, |
3801 | uint32_t addpath_id) | |
d62a17ae | 3802 | { |
3803 | struct prefix_rd prd; | |
e121d831 QY |
3804 | struct prefix_evpn p = {}; |
3805 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3806 | uint8_t ipaddr_len; |
3807 | uint8_t macaddr_len; | |
e121d831 QY |
3808 | /* holds the VNI(s) as in packet */ |
3809 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3810 | uint32_t num_labels = 0; |
554cd77a | 3811 | uint32_t eth_tag; |
d62a17ae | 3812 | int ret; |
3813 | ||
3814 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3815 | * additional 3 bytes if there is a second label (VNI): | |
3816 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3817 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3818 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3819 | */ | |
3820 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3821 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3822 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3823 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3824 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3825 | return -1; |
3826 | } | |
3827 | ||
e121d831 QY |
3828 | struct stream *pkt = stream_new(psize); |
3829 | stream_put(pkt, pfx, psize); | |
554cd77a | 3830 | |
d62a17ae | 3831 | /* Make prefix_rd */ |
3832 | prd.family = AF_UNSPEC; | |
3833 | prd.prefixlen = 64; | |
e121d831 QY |
3834 | |
3835 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3836 | |
3837 | /* Make EVPN prefix. */ | |
b03b8898 | 3838 | p.family = AF_EVPN; |
50f74cf1 | 3839 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3840 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3841 | ||
554cd77a | 3842 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3843 | if (attr) { |
e121d831 QY |
3844 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3845 | ||
74efb822 | 3846 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3847 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3848 | else | |
3849 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3850 | } else { |
3851 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3852 | } |
d62a17ae | 3853 | |
554cd77a | 3854 | /* Copy Ethernet Tag */ |
e121d831 | 3855 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3856 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3857 | |
3858 | /* Get the MAC Addr len */ | |
e121d831 | 3859 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3860 | |
3861 | /* Get the MAC Addr */ | |
28328ea9 | 3862 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3863 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3864 | } else { |
af4c2728 | 3865 | flog_err( |
e50f7cfd | 3866 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3867 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3868 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3869 | goto fail; |
d62a17ae | 3870 | } |
3871 | ||
3872 | ||
3873 | /* Get the IP. */ | |
e121d831 QY |
3874 | STREAM_GETC(pkt, ipaddr_len); |
3875 | ||
d62a17ae | 3876 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3877 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3878 | flog_err( |
e50f7cfd | 3879 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3880 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3881 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3882 | goto fail; |
d62a17ae | 3883 | } |
3884 | ||
3885 | if (ipaddr_len) { | |
3886 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3887 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3888 | ? IPADDR_V4 |
3889 | : IPADDR_V6; | |
e121d831 | 3890 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3891 | } |
d62a17ae | 3892 | |
b57ba6d2 | 3893 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3894 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3895 | num_labels++; |
e121d831 | 3896 | |
b57ba6d2 | 3897 | /* Do we have a second VNI? */ |
e121d831 | 3898 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3899 | num_labels++; |
e121d831 | 3900 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3901 | } |
d62a17ae | 3902 | |
3903 | /* Process the route. */ | |
3904 | if (attr) | |
3905 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3906 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3907 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3908 | else |
3909 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3910 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3911 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3912 | goto done; |
3913 | ||
3914 | fail: | |
3915 | stream_failure: | |
3916 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3917 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3918 | peer->bgp->vrf_id, peer->host); | |
3919 | ret = -1; | |
3920 | done: | |
3921 | stream_free(pkt); | |
d62a17ae | 3922 | return ret; |
128ea8ab | 3923 | } |
3924 | ||
3925 | /* | |
3926 | * Process received EVPN type-3 route (advertise or withdraw). | |
3927 | */ | |
d62a17ae | 3928 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3929 | struct attr *attr, uint8_t *pfx, int psize, |
3930 | uint32_t addpath_id) | |
d62a17ae | 3931 | { |
3932 | struct prefix_rd prd; | |
3933 | struct prefix_evpn p; | |
d7c0a89a | 3934 | uint8_t ipaddr_len; |
554cd77a | 3935 | uint32_t eth_tag; |
d62a17ae | 3936 | int ret; |
3937 | ||
3938 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3939 | * IP len (1) and IP (4 or 16). | |
3940 | */ | |
3941 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3942 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3943 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3944 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3945 | return -1; |
3946 | } | |
3947 | ||
7fd077aa | 3948 | /* If PMSI is present, log if it is anything other than IR. |
3949 | * Note: We just simply ignore the values as it is not clear if | |
3950 | * doing anything else is better. | |
3951 | */ | |
3952 | if (attr && | |
3953 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3954 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3955 | ||
3956 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3957 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3958 | flog_warn( | |
3959 | EC_BGP_EVPN_PMSI_PRESENT, | |
3960 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3961 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3962 | } |
3963 | } | |
3964 | ||
d62a17ae | 3965 | /* Make prefix_rd */ |
3966 | prd.family = AF_UNSPEC; | |
3967 | prd.prefixlen = 64; | |
3968 | memcpy(&prd.val, pfx, 8); | |
3969 | pfx += 8; | |
3970 | ||
3971 | /* Make EVPN prefix. */ | |
3972 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3973 | p.family = AF_EVPN; |
50f74cf1 | 3974 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3975 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3976 | ||
554cd77a VB |
3977 | /* Copy Ethernet Tag */ |
3978 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3979 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3980 | pfx += 4; |
3981 | ||
3982 | /* Get the IP. */ | |
3983 | ipaddr_len = *pfx++; | |
3984 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3985 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3986 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3987 | } else { |
af4c2728 | 3988 | flog_err( |
e50f7cfd | 3989 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3990 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3991 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3992 | return -1; | |
3993 | } | |
3994 | ||
3995 | /* Process the route. */ | |
3996 | if (attr) | |
3997 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3998 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3999 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4000 | else |
4001 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4002 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4003 | &prd, NULL, 0, NULL); |
d62a17ae | 4004 | return ret; |
128ea8ab | 4005 | } |
4006 | ||
4007 | /* | |
4008 | * Process received EVPN type-5 route (advertise or withdraw). | |
4009 | */ | |
d62a17ae | 4010 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4011 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4012 | uint32_t addpath_id) |
d62a17ae | 4013 | { |
4014 | struct prefix_rd prd; | |
4015 | struct prefix_evpn p; | |
4016 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4017 | uint8_t ippfx_len; |
4018 | uint32_t eth_tag; | |
b57ba6d2 | 4019 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4020 | int ret; |
c6ec0c74 | 4021 | afi_t gw_afi; |
66ff6089 | 4022 | bool is_valid_update = true; |
d62a17ae | 4023 | |
4024 | /* Type-5 route should be 34 or 58 bytes: | |
4025 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4026 | * GW (4 or 16) and VNI (3). | |
4027 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4028 | */ | |
4029 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4030 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4031 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4032 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4033 | return -1; |
4034 | } | |
4035 | ||
4036 | /* Make prefix_rd */ | |
4037 | prd.family = AF_UNSPEC; | |
4038 | prd.prefixlen = 64; | |
4039 | memcpy(&prd.val, pfx, 8); | |
4040 | pfx += 8; | |
4041 | ||
4042 | /* Make EVPN prefix. */ | |
4043 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4044 | p.family = AF_EVPN; |
50f74cf1 | 4045 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4046 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4047 | ||
4048 | /* Additional information outside of prefix - ESI and GW IP */ | |
4049 | memset(&evpn, 0, sizeof(evpn)); | |
4050 | ||
66ff6089 | 4051 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4052 | if (attr) |
66ff6089 | 4053 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4054 | pfx += ESI_BYTES; |
d62a17ae | 4055 | |
4056 | /* Fetch Ethernet Tag. */ | |
4057 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4058 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4059 | pfx += 4; |
4060 | ||
4061 | /* Fetch IP prefix length. */ | |
4062 | ippfx_len = *pfx++; | |
4063 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4064 | flog_err( |
e50f7cfd | 4065 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4066 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4067 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4068 | return -1; | |
4069 | } | |
3714a385 | 4070 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4071 | |
4072 | /* Determine IPv4 or IPv6 prefix */ | |
4073 | /* Since the address and GW are from the same family, this just becomes | |
4074 | * a simple check on the total size. | |
4075 | */ | |
4076 | if (psize == 34) { | |
3714a385 | 4077 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4078 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4079 | pfx += 4; |
4080 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4081 | pfx += 4; | |
c6ec0c74 | 4082 | gw_afi = AF_INET; |
d62a17ae | 4083 | } else { |
3714a385 | 4084 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4085 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4086 | pfx += 16; |
4087 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4088 | pfx += 16; | |
c6ec0c74 | 4089 | gw_afi = AF_INET6; |
d62a17ae | 4090 | } |
4091 | ||
b57ba6d2 MK |
4092 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4093 | memset(&label, 0, sizeof(label)); | |
4094 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4095 | |
4096 | /* | |
4097 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4098 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4099 | * field | |
6b11bd8d | 4100 | */ |
d62a17ae | 4101 | |
66ff6089 AD |
4102 | /* |
4103 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4104 | * at the same time is should be treated as withdraw | |
4105 | */ | |
4106 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4107 | && !is_zero_gw_ip(&evpn.gw_ip, gw_afi)) { | |
4108 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4109 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4110 | peer->host); | |
4111 | is_valid_update = false; | |
4112 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4113 | evpn.type = OVERLAY_INDEX_ESI; | |
4114 | else if (!is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4115 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; | |
c6ec0c74 | 4116 | if (attr) { |
66ff6089 AD |
4117 | if (is_zero_mac(&attr->rmac) |
4118 | && !bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4119 | && is_zero_gw_ip(&evpn.gw_ip, gw_afi) && label == 0) { | |
4120 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4121 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4122 | peer->host); | |
c6ec0c74 | 4123 | is_valid_update = false; |
66ff6089 | 4124 | } |
c6ec0c74 KA |
4125 | |
4126 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4127 | is_valid_update = false; | |
4128 | } | |
4129 | ||
d62a17ae | 4130 | /* Process the route. */ |
66ff6089 | 4131 | if (attr && is_valid_update) |
d62a17ae | 4132 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4133 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4134 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4135 | else { |
4136 | if (!is_valid_update) { | |
4137 | char attr_str[BUFSIZ] = {0}; | |
4138 | ||
4139 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4140 | zlog_warn( | |
4141 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4142 | peer->hostname, peer->bgp->vrf_id, &p, | |
4143 | attr_str); | |
4144 | } | |
d62a17ae | 4145 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4146 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4147 | &prd, &label, 1, &evpn); |
66ff6089 | 4148 | } |
d62a17ae | 4149 | |
4150 | return ret; | |
4151 | } | |
4152 | ||
5f040085 DS |
4153 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4154 | const struct prefix_rd *prd, | |
4155 | mpls_label_t *label, uint32_t num_labels, | |
4156 | struct attr *attr) | |
d62a17ae | 4157 | { |
4158 | int len; | |
4159 | char temp[16]; | |
5f040085 | 4160 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4161 | |
4162 | memset(&temp, 0, 16); | |
b03b8898 | 4163 | if (p->family != AF_EVPN) |
d62a17ae | 4164 | return; |
4165 | p_evpn_p = &(p->u.prefix_evpn); | |
4166 | ||
e9fc2840 | 4167 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4168 | IP and GW-IP have to be both ipv4 or ipv6 |
4169 | */ | |
3714a385 | 4170 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4171 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4172 | else |
e9fc2840 | 4173 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4174 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4175 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4176 | stream_put(s, prd->val, 8); | |
6c995628 | 4177 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4178 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4179 | else |
c44ab6f1 | 4180 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4181 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4182 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4183 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4184 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4185 | else |
3714a385 | 4186 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4187 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4188 | const struct bgp_route_evpn *evpn_overlay = |
4189 | bgp_attr_get_evpn_overlay(attr); | |
4190 | ||
3714a385 | 4191 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
6c924775 | 4192 | stream_put_ipv4(s, evpn_overlay->gw_ip.ipv4.s_addr); |
d62a17ae | 4193 | else |
6c924775 | 4194 | stream_put(s, &(evpn_overlay->gw_ip.ipv6), 16); |
d62a17ae | 4195 | } else { |
3714a385 | 4196 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4197 | stream_put_ipv4(s, 0); |
4198 | else | |
4199 | stream_put(s, &temp, 16); | |
4200 | } | |
4201 | ||
b57ba6d2 | 4202 | if (num_labels) |
d62a17ae | 4203 | stream_put(s, label, 3); |
4204 | else | |
4205 | stream_put3(s, 0); | |
128ea8ab | 4206 | } |
4207 | ||
4208 | /* | |
4209 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4210 | */ | |
e3b78da8 | 4211 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4212 | { |
e3b78da8 | 4213 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4214 | |
d62a17ae | 4215 | /* Remove EVPN routes and schedule for processing. */ |
4216 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4217 | |
d62a17ae | 4218 | /* Clear "live" flag and see if hash needs to be freed. */ |
4219 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4220 | if (!is_vni_configured(vpn)) | |
4221 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4222 | } |
4223 | ||
4224 | /* | |
4225 | * Free a VNI entry; iterator function called during cleanup. | |
4226 | */ | |
e3b78da8 | 4227 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4228 | { |
e3b78da8 | 4229 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4230 | |
d62a17ae | 4231 | delete_all_vni_routes(bgp, vpn); |
4232 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4233 | } |
4234 | ||
c581d8b0 MK |
4235 | /* |
4236 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4237 | */ | |
4238 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4239 | { | |
5e53dce3 | 4240 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4241 | |
c581d8b0 | 4242 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4243 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4244 | ||
4245 | /* Map RT to VRF */ | |
5e53dce3 T |
4246 | bgp_evpn = bgp_get_evpn(); |
4247 | if (!bgp_evpn) | |
10ebe1ab MK |
4248 | return; |
4249 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4250 | } |
4251 | ||
4252 | /* | |
4253 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4254 | */ | |
4255 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4256 | { | |
4257 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4258 | } | |
4259 | ||
4260 | /* | |
4261 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4262 | */ | |
4263 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4264 | { | |
4265 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4266 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4267 | } | |
4268 | ||
4269 | /* | |
4270 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4271 | */ | |
4272 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4273 | { | |
4274 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4275 | } | |
128ea8ab | 4276 | |
f1f8b53c MK |
4277 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4278 | { | |
5e53dce3 | 4279 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4280 | struct listnode *node = NULL; |
4281 | struct bgpevpn *vpn = NULL; | |
4282 | ||
5e53dce3 T |
4283 | bgp_evpn = bgp_get_evpn(); |
4284 | if (!bgp_evpn) | |
f1f8b53c MK |
4285 | return; |
4286 | ||
4992b4ae MK |
4287 | /* update all type-5 routes */ |
4288 | update_advertise_vrf_routes(bgp_vrf); | |
4289 | ||
4290 | /* update all type-2 routes */ | |
f1f8b53c | 4291 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4292 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4293 | } |
4294 | ||
bf1061d8 VB |
4295 | /* |
4296 | * Handle autort change for a given VNI. | |
4297 | */ | |
e3b78da8 | 4298 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4299 | { |
e3b78da8 | 4300 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4301 | |
bf1061d8 VB |
4302 | if (!is_import_rt_configured(vpn)) { |
4303 | if (is_vni_live(vpn)) | |
4304 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4305 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4306 | list_delete_all_node(vpn->import_rtl); |
4307 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4308 | if (is_vni_live(vpn)) | |
4309 | bgp_evpn_install_routes(bgp, vpn); | |
4310 | } | |
4311 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4312 | list_delete_all_node(vpn->export_rtl); |
4313 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4314 | if (is_vni_live(vpn)) | |
4315 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4316 | } | |
4317 | } | |
4318 | ||
128ea8ab | 4319 | /* |
4320 | * Public functions. | |
4321 | */ | |
4322 | ||
5424b7ba | 4323 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4324 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4325 | afi_t afi, safi_t safi) |
4326 | { | |
4327 | int ret = 0; | |
4328 | struct prefix_evpn evp; | |
5424b7ba | 4329 | |
31310b25 | 4330 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4331 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4332 | if (ret) |
af4c2728 | 4333 | flog_err( |
e50f7cfd | 4334 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4335 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4336 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4337 | } |
4338 | ||
342dd0c6 | 4339 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4340 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4341 | { |
4342 | struct bgp_table *table = NULL; | |
9bcb3eef | 4343 | struct bgp_dest *dest = NULL; |
40381db7 | 4344 | struct bgp_path_info *pi; |
342dd0c6 | 4345 | |
053905d2 | 4346 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4347 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4348 | /* Only care about "selected" routes. Also ensure that |
4349 | * these are routes that are injectable into EVPN. | |
4350 | */ | |
25f2ca53 | 4351 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4352 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4353 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4354 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4355 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4356 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4357 | safi); |
25f2ca53 | 4358 | break; |
4359 | } | |
4360 | } | |
4361 | } | |
5424b7ba | 4362 | } |
342dd0c6 | 4363 | |
5fd9c12b KA |
4364 | /* |
4365 | * evpn - enable advertisement of default g/w | |
4366 | */ | |
4367 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4368 | safi_t safi, bool add) | |
4369 | { | |
4370 | struct prefix ip_prefix; | |
4371 | ||
4372 | /* form the default prefix 0.0.0.0/0 */ | |
4373 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4374 | ip_prefix.family = afi2family(afi); | |
4375 | ||
4376 | if (add) { | |
4377 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4378 | NULL, afi, safi); | |
4379 | } else { | |
4380 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4381 | afi, safi); | |
4382 | } | |
4383 | } | |
4384 | ||
4385 | ||
2f69f6d3 | 4386 | /* |
4387 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4388 | * to this function correspond to those of the source IP prefix (best | |
4389 | * path in the case of the attr. In the case of a local prefix (when we | |
4390 | * are advertising local subnets), the src_attr will be NULL. | |
4391 | */ | |
bd494ec5 | 4392 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4393 | struct attr *src_attr, afi_t afi, |
4394 | safi_t safi) | |
5424b7ba MK |
4395 | { |
4396 | int ret = 0; | |
4397 | struct prefix_evpn evp; | |
7c82b312 | 4398 | |
31310b25 | 4399 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4400 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4401 | if (ret) |
e50f7cfd | 4402 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4403 | "%u: Failed to create type-5 route for prefix %pFX", |
4404 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4405 | } |
4406 | ||
2f69f6d3 | 4407 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4408 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4409 | * advertisement is enabled. | |
4410 | */ | |
996c9314 LB |
4411 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4412 | safi_t safi) | |
342dd0c6 | 4413 | { |
4414 | struct bgp_table *table = NULL; | |
9bcb3eef | 4415 | struct bgp_dest *dest = NULL; |
40381db7 | 4416 | struct bgp_path_info *pi; |
342dd0c6 | 4417 | |
053905d2 | 4418 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4419 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4420 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4421 | * attribute. Also, ensure that the route is injectable |
4422 | * into EVPN. | |
2f69f6d3 | 4423 | * TODO: Support for AddPath for EVPN. |
4424 | */ | |
9bcb3eef | 4425 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4426 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4427 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4428 | |
4429 | /* apply the route-map */ | |
4430 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4431 | route_map_result_t ret; |
e34291b8 | 4432 | struct bgp_path_info tmp_pi; |
4433 | struct bgp_path_info_extra tmp_pie; | |
4434 | struct attr tmp_attr; | |
4435 | ||
4436 | tmp_attr = *pi->attr; | |
4437 | ||
4438 | /* Fill temp path_info */ | |
9bcb3eef DS |
4439 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4440 | dest, pi, pi->peer, | |
4441 | &tmp_attr); | |
e34291b8 | 4442 | |
4443 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4444 | |
996c9314 LB |
4445 | ret = route_map_apply( |
4446 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4447 | .map, | |
9bcb3eef | 4448 | bgp_dest_get_prefix(dest), |
1782514f | 4449 | &tmp_pi); |
e34291b8 | 4450 | if (ret == RMAP_DENYMATCH) { |
4451 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4452 | continue; |
e34291b8 | 4453 | } |
4454 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4455 | bgp_vrf, |
9bcb3eef | 4456 | bgp_dest_get_prefix(dest), |
b54892e0 | 4457 | &tmp_attr, afi, safi); |
e34291b8 | 4458 | } else |
4459 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4460 | bgp_vrf, |
9bcb3eef | 4461 | bgp_dest_get_prefix(dest), |
b54892e0 | 4462 | pi->attr, afi, safi); |
2f69f6d3 | 4463 | break; |
4464 | } | |
4465 | } | |
31310b25 | 4466 | } |
342dd0c6 | 4467 | } |
4468 | ||
996c9314 | 4469 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4470 | { |
4471 | struct listnode *node, *nnode, *node_to_del; | |
4472 | struct ecommunity *ecom, *ecom_auto; | |
4473 | struct ecommunity_val eval; | |
4474 | ||
bf1061d8 VB |
4475 | if (bgp->advertise_autort_rfc8365) |
4476 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4477 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4478 | ||
4479 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4480 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4481 | node_to_del = NULL; |
4482 | ||
4483 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4484 | if (ecommunity_match(ecom, ecom_auto)) { | |
4485 | ecommunity_free(&ecom); | |
4486 | node_to_del = node; | |
4487 | } | |
4488 | } | |
4489 | ||
4490 | if (node_to_del) | |
4491 | list_delete_node(rtl, node_to_del); | |
4492 | ||
4493 | ecommunity_free(&ecom_auto); | |
4494 | } | |
4495 | ||
4496 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4497 | struct ecommunity *ecomadd) |
c581d8b0 | 4498 | { |
5ba238b7 | 4499 | /* uninstall routes from vrf */ |
3d0b43d7 | 4500 | if (is_l3vni_live(bgp_vrf)) |
4501 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4502 | |
4503 | /* Cleanup the RT to VRF mapping */ | |
4504 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4505 | ||
c581d8b0 MK |
4506 | /* Remove auto generated RT */ |
4507 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4508 | ||
4509 | /* Add the newly configured RT to RT list */ | |
4510 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4511 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4512 | ||
3d0b43d7 | 4513 | /* map VRF to its RTs and install routes matching the new RTs */ |
4514 | if (is_l3vni_live(bgp_vrf)) { | |
4515 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4516 | install_routes_for_vrf(bgp_vrf); | |
4517 | } | |
c581d8b0 MK |
4518 | } |
4519 | ||
4520 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4521 | struct ecommunity *ecomdel) | |
4522 | { | |
4523 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4524 | struct ecommunity *ecom = NULL; | |
4525 | ||
5ba238b7 | 4526 | /* uninstall routes from vrf */ |
3d0b43d7 | 4527 | if (is_l3vni_live(bgp_vrf)) |
4528 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4529 | |
4530 | /* Cleanup the RT to VRF mapping */ | |
4531 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4532 | ||
c581d8b0 MK |
4533 | /* remove the RT from the RT list */ |
4534 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4535 | if (ecommunity_match(ecom, ecomdel)) { | |
4536 | ecommunity_free(&ecom); | |
4537 | node_to_del = node; | |
4538 | break; | |
4539 | } | |
4540 | } | |
4541 | ||
4542 | if (node_to_del) | |
4543 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4544 | ||
b3a4db3d | 4545 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4546 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4547 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4548 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4549 | if (is_l3vni_live(bgp_vrf)) |
4550 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4551 | } |
4552 | ||
3d0b43d7 | 4553 | /* map VRFs to its RTs and install routes matching this new RT */ |
4554 | if (is_l3vni_live(bgp_vrf)) { | |
4555 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4556 | install_routes_for_vrf(bgp_vrf); | |
4557 | } | |
c581d8b0 MK |
4558 | } |
4559 | ||
4560 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4561 | struct ecommunity *ecomadd) | |
4562 | { | |
4563 | /* remove auto-generated RT */ | |
4564 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4565 | ||
4566 | /* Add the new RT to the RT list */ | |
4567 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4568 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4569 | ||
ebdc9e64 AD |
4570 | if (is_l3vni_live(bgp_vrf)) |
4571 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4572 | } |
4573 | ||
4574 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4575 | struct ecommunity *ecomdel) | |
4576 | { | |
4577 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4578 | struct ecommunity *ecom = NULL; | |
4579 | ||
4580 | /* Remove the RT from the RT list */ | |
4581 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4582 | if (ecommunity_match(ecom, ecomdel)) { | |
4583 | ecommunity_free(&ecom); | |
4584 | node_to_del = node; | |
4585 | break; | |
4586 | } | |
4587 | } | |
4588 | ||
4589 | if (node_to_del) | |
4590 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4591 | ||
1525e99f DS |
4592 | /* |
4593 | * Temporary assert to make SA happy. | |
4594 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4595 | * which means that SA is going to complain about | |
4596 | * the list_isempty call, which doesn't NULL check. | |
4597 | * So until we get this situation cleaned up, here | |
4598 | * we are. | |
4599 | */ | |
4600 | assert(bgp_vrf->vrf_export_rtl); | |
4601 | ||
c581d8b0 | 4602 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4603 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4604 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4605 | if (is_l3vni_live(bgp_vrf)) |
4606 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4607 | } |
4608 | ||
ebdc9e64 AD |
4609 | if (is_l3vni_live(bgp_vrf)) |
4610 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4611 | } |
4612 | ||
2d48ee25 | 4613 | /* |
4614 | * Handle change to BGP router id. This is invoked twice by the change | |
4615 | * handler, first before the router id has been changed and then after | |
4616 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4617 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4618 | * will result in the routes being re-advertised. |
4619 | */ | |
d62a17ae | 4620 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4621 | { |
5394a276 CS |
4622 | struct listnode *node; |
4623 | struct bgp *bgp_vrf; | |
4624 | ||
676f83b9 | 4625 | if (withdraw) { |
4626 | ||
4627 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4628 | stored in the global table for this vrf |
4629 | */ | |
80b140af | 4630 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4631 | |
4632 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4633 | * L2-VNIs |
4634 | */ | |
d62a17ae | 4635 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4636 | (void (*)(struct hash_bucket *, |
d62a17ae | 4637 | void *))withdraw_router_id_vni, |
4638 | bgp); | |
5394a276 CS |
4639 | |
4640 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4641 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4642 | if (bgp_vrf->evpn_info->advertise_pip && | |
4643 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4644 | == INADDR_ANY)) | |
4645 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4646 | = INADDR_ANY; | |
4647 | } | |
4648 | } | |
676f83b9 | 4649 | } else { |
4650 | ||
5394a276 CS |
4651 | /* Assign new default instance router-id */ |
4652 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4653 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4654 | if (bgp_vrf->evpn_info->advertise_pip && | |
4655 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4656 | == INADDR_ANY)) { | |
4657 | bgp_vrf->evpn_info->pip_ip = | |
4658 | bgp->router_id; | |
4659 | /* advertise type-5 routes with | |
4660 | * new nexthop | |
4661 | */ | |
4662 | update_advertise_vrf_routes(bgp_vrf); | |
4663 | } | |
4664 | } | |
4665 | } | |
4666 | ||
676f83b9 | 4667 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4668 | * RD |
4669 | */ | |
80b140af | 4670 | update_router_id_vrf(bgp); |
676f83b9 | 4671 | |
4672 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4673 | * new RD |
4674 | */ | |
d62a17ae | 4675 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4676 | (void (*)(struct hash_bucket *, |
d62a17ae | 4677 | void *))update_router_id_vni, |
4678 | bgp); | |
676f83b9 | 4679 | } |
2d48ee25 | 4680 | } |
4681 | ||
bf1061d8 VB |
4682 | /* |
4683 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4684 | */ | |
4685 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4686 | { | |
4687 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4688 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4689 | void*))update_autort_vni, |
4690 | bgp); | |
4691 | } | |
4692 | ||
90e60aa7 | 4693 | /* |
4694 | * Handle change to export RT - update and advertise local routes. | |
4695 | */ | |
d62a17ae | 4696 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4697 | { |
d62a17ae | 4698 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4699 | } |
4700 | ||
996c9314 | 4701 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4702 | { |
4703 | if (withdraw) | |
4704 | delete_withdraw_vrf_routes(bgp_vrf); | |
4705 | else | |
4706 | update_advertise_vrf_routes(bgp_vrf); | |
4707 | } | |
4708 | ||
90e60aa7 | 4709 | /* |
4710 | * Handle change to RD. This is invoked twice by the change handler, | |
4711 | * first before the RD has been changed and then after the RD has | |
4712 | * been changed. The first invocation will result in local routes | |
4713 | * of this VNI being deleted and withdrawn and the next will result | |
4714 | * in the routes being re-advertised. | |
4715 | */ | |
d62a17ae | 4716 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4717 | int withdraw) | |
90e60aa7 | 4718 | { |
d62a17ae | 4719 | if (withdraw) |
4720 | delete_withdraw_vni_routes(bgp, vpn); | |
4721 | else | |
4722 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4723 | } |
4724 | ||
4725 | /* | |
4726 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4727 | */ | |
d62a17ae | 4728 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4729 | { |
d62a17ae | 4730 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4731 | } |
4732 | ||
4733 | /* | |
4734 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4735 | * to Import RT. | |
4736 | */ | |
d62a17ae | 4737 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4738 | { |
d62a17ae | 4739 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4740 | } |
4741 | ||
b16031a2 | 4742 | /* |
b57ba6d2 | 4743 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4744 | */ |
d7c0a89a | 4745 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4746 | int len) |
b16031a2 | 4747 | { |
b57ba6d2 | 4748 | vni_t vni1, vni2; |
b16031a2 | 4749 | |
b57ba6d2 MK |
4750 | vni1 = label2vni(label); |
4751 | if (num_labels == 2) { | |
996c9314 | 4752 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4753 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4754 | } else | |
4755 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4756 | return buf; |
b16031a2 | 4757 | } |
4758 | ||
9c92b5f7 MK |
4759 | /* |
4760 | * Function to convert evpn route to json format. | |
4761 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4762 | */ | |
bd494ec5 | 4763 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4764 | { |
b682f6de | 4765 | char buf1[ETHER_ADDR_STRLEN]; |
4766 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4767 | uint8_t family; |
4768 | uint8_t prefixlen; | |
9c92b5f7 | 4769 | |
b682f6de | 4770 | if (!json) |
4771 | return; | |
9c92b5f7 | 4772 | |
44c69747 LK |
4773 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4774 | ||
4775 | switch (p->prefix.route_type) { | |
4776 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4777 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4778 | p->prefix.macip_addr.eth_tag); |
4779 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4780 | json_object_string_add(json, "mac", | |
4781 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4782 | sizeof(buf1))); | |
4783 | ||
4784 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4785 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4786 | AF_INET6; | |
4787 | prefixlen = (family == AF_INET) ? | |
4788 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4789 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4790 | buf2, PREFIX2STR_BUFFER); | |
4791 | json_object_int_add(json, "ipLen", prefixlen); | |
4792 | json_object_string_add(json, "ip", buf2); | |
4793 | } | |
4794 | break; | |
dff8f48d | 4795 | |
44c69747 LK |
4796 | case BGP_EVPN_IMET_ROUTE: |
4797 | json_object_int_add(json, "ethTag", | |
4798 | p->prefix.imet_addr.eth_tag); | |
4799 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4800 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4801 | IPV6_MAX_BITLEN; | |
4802 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4803 | PREFIX2STR_BUFFER); | |
4804 | json_object_int_add(json, "ipLen", prefixlen); | |
4805 | json_object_string_add(json, "ip", buf2); | |
4806 | break; | |
dff8f48d | 4807 | |
44c69747 LK |
4808 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4809 | json_object_int_add(json, "ethTag", | |
4810 | p->prefix.prefix_addr.eth_tag); | |
4811 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4812 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4813 | buf2, sizeof(buf2)); | |
4814 | json_object_int_add(json, "ipLen", | |
4815 | p->prefix.prefix_addr.ip_prefix_length); | |
4816 | json_object_string_add(json, "ip", buf2); | |
4817 | break; | |
4818 | ||
4819 | default: | |
4820 | break; | |
dff8f48d | 4821 | } |
9c92b5f7 MK |
4822 | } |
4823 | ||
128ea8ab | 4824 | /* |
4825 | * Encode EVPN prefix in Update (MP_REACH) | |
4826 | */ | |
5f040085 DS |
4827 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4828 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4829 | uint32_t num_labels, struct attr *attr, |
4830 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4831 | { |
4832 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4833 | int len, ipa_len = 0; |
d62a17ae | 4834 | |
4835 | if (addpath_encode) | |
4836 | stream_putl(s, addpath_tx_id); | |
4837 | ||
4838 | /* Route type */ | |
4839 | stream_putc(s, evp->prefix.route_type); | |
4840 | ||
4841 | switch (evp->prefix.route_type) { | |
4842 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4843 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4844 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4845 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4846 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4847 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4848 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4849 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4850 | len += 3; | |
4851 | stream_putc(s, len); | |
996c9314 | 4852 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4853 | if (attr) |
c44ab6f1 | 4854 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4855 | else |
4856 | stream_put(s, 0, 10); | |
3714a385 | 4857 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4858 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4859 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4860 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4861 | if (ipa_len) /* IP */ | |
4862 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4863 | ipa_len); | |
b57ba6d2 MK |
4864 | /* 1st label is the L2 VNI */ |
4865 | stream_put(s, label, BGP_LABEL_BYTES); | |
4866 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4867 | if (ipa_len && num_labels > 1) | |
996c9314 | 4868 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4869 | break; |
4870 | ||
4871 | case BGP_EVPN_IMET_ROUTE: | |
4872 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4873 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4874 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4875 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4876 | /* Originating Router's IP Addr */ | |
3714a385 | 4877 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4878 | break; |
4879 | ||
50f74cf1 | 4880 | case BGP_EVPN_ES_ROUTE: |
4881 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4882 | stream_put(s, prd->val, 8); /* RD */ | |
4883 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4884 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4885 | /* VTEP IP */ |
4886 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4887 | break; |
4888 | ||
c44ab6f1 AK |
4889 | case BGP_EVPN_AD_ROUTE: |
4890 | /* RD, ESI, EthTag, 1 VNI */ | |
4891 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4892 | stream_putc(s, len); | |
4893 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4894 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4895 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4896 | stream_put(s, label, BGP_LABEL_BYTES); | |
4897 | break; | |
4898 | ||
d62a17ae | 4899 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4900 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4901 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4902 | break; |
4903 | ||
4904 | default: | |
4905 | break; | |
4906 | } | |
4907 | } | |
4908 | ||
4909 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4910 | struct bgp_nlri *packet, int withdraw) | |
4911 | { | |
d7c0a89a QY |
4912 | uint8_t *pnt; |
4913 | uint8_t *lim; | |
d62a17ae | 4914 | afi_t afi; |
4915 | safi_t safi; | |
d7c0a89a | 4916 | uint32_t addpath_id; |
d62a17ae | 4917 | int addpath_encoded; |
4918 | int psize = 0; | |
d7c0a89a | 4919 | uint8_t rtype; |
d62a17ae | 4920 | struct prefix p; |
4921 | ||
d62a17ae | 4922 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4923 | pnt = packet->nlri; | |
4924 | lim = pnt + packet->length; | |
4925 | afi = packet->afi; | |
4926 | safi = packet->safi; | |
4927 | addpath_id = 0; | |
4928 | ||
4929 | addpath_encoded = | |
4930 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4931 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4932 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4933 | ||
4934 | for (; pnt < lim; pnt += psize) { | |
4935 | /* Clear prefix structure. */ | |
4936 | memset(&p, 0, sizeof(struct prefix)); | |
4937 | ||
4938 | /* Deal with path-id if AddPath is supported. */ | |
4939 | if (addpath_encoded) { | |
4940 | /* When packet overflow occurs return immediately. */ | |
4941 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4942 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4943 | |
a3a850a1 S |
4944 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4945 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4946 | pnt += BGP_ADDPATH_ID_LEN; |
4947 | } | |
4948 | ||
4949 | /* All EVPN NLRI types start with type and length. */ | |
4950 | if (pnt + 2 > lim) | |
513386b5 | 4951 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4952 | |
4953 | rtype = *pnt++; | |
3f54c705 | 4954 | psize = *pnt++; |
d62a17ae | 4955 | |
4956 | /* When packet overflow occur return immediately. */ | |
4957 | if (pnt + psize > lim) | |
513386b5 | 4958 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4959 | |
4960 | switch (rtype) { | |
4961 | case BGP_EVPN_MAC_IP_ROUTE: | |
4962 | if (process_type2_route(peer, afi, safi, | |
4963 | withdraw ? NULL : attr, pnt, | |
4964 | psize, addpath_id)) { | |
af4c2728 | 4965 | flog_err( |
e50f7cfd | 4966 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4967 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4968 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4969 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4970 | } |
4971 | break; | |
4972 | ||
4973 | case BGP_EVPN_IMET_ROUTE: | |
4974 | if (process_type3_route(peer, afi, safi, | |
4975 | withdraw ? NULL : attr, pnt, | |
4976 | psize, addpath_id)) { | |
af4c2728 | 4977 | flog_err( |
e50f7cfd | 4978 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4979 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4980 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4981 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4982 | } |
4983 | break; | |
4984 | ||
50f74cf1 | 4985 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4986 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4987 | withdraw ? NULL : attr, pnt, |
4988 | psize, addpath_id)) { | |
af4c2728 | 4989 | flog_err( |
e50f7cfd | 4990 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4991 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4992 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4993 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4994 | } |
4995 | break; | |
4996 | ||
c44ab6f1 AK |
4997 | case BGP_EVPN_AD_ROUTE: |
4998 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4999 | withdraw ? NULL : attr, pnt, | |
5000 | psize, addpath_id)) { | |
5001 | flog_err( | |
5002 | EC_BGP_PKT_PROCESS, | |
5003 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5004 | peer->bgp->vrf_id, peer->host, psize); | |
5005 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5006 | } | |
5007 | break; | |
5008 | ||
d62a17ae | 5009 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5010 | if (process_type5_route(peer, afi, safi, |
5011 | withdraw ? NULL : attr, pnt, | |
5012 | psize, addpath_id)) { | |
af4c2728 | 5013 | flog_err( |
e50f7cfd | 5014 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5015 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5016 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5017 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5018 | } |
5019 | break; | |
5020 | ||
5021 | default: | |
5022 | break; | |
5023 | } | |
5024 | } | |
5025 | ||
5026 | /* Packet length consistency check. */ | |
5027 | if (pnt != lim) | |
513386b5 | 5028 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5029 | |
513386b5 | 5030 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5031 | } |
5032 | ||
10ebe1ab MK |
5033 | /* |
5034 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5035 | * The mapping will be used during route processing. | |
5036 | * bgp_def: default bgp instance | |
5037 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5038 | */ | |
5039 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5040 | { | |
f6e07e1b | 5041 | uint32_t i = 0; |
10ebe1ab MK |
5042 | struct ecommunity_val *eval = NULL; |
5043 | struct listnode *node = NULL, *nnode = NULL; | |
5044 | struct ecommunity *ecom = NULL; | |
5045 | ||
5046 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5047 | for (i = 0; i < ecom->size; i++) { | |
5048 | eval = (struct ecommunity_val *)(ecom->val | |
5049 | + (i | |
5050 | * ECOMMUNITY_SIZE)); | |
5051 | map_vrf_to_rt(bgp_vrf, eval); | |
5052 | } | |
5053 | } | |
5054 | } | |
5055 | ||
5056 | /* | |
5057 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5058 | */ | |
5059 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5060 | { | |
f6e07e1b | 5061 | uint32_t i; |
10ebe1ab MK |
5062 | struct ecommunity_val *eval; |
5063 | struct listnode *node, *nnode; | |
5064 | struct ecommunity *ecom; | |
5065 | ||
5066 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5067 | for (i = 0; i < ecom->size; i++) { | |
5068 | struct vrf_irt_node *irt; | |
5069 | struct ecommunity_val eval_tmp; | |
5070 | ||
5071 | eval = (struct ecommunity_val *)(ecom->val | |
5072 | + (i | |
5073 | * ECOMMUNITY_SIZE)); | |
5074 | /* If using "automatic" RT, we only care about the | |
5075 | * local-admin sub-field. | |
5076 | * This is to facilitate using VNI as the RT for EBGP | |
5077 | * peering too. | |
5078 | */ | |
5079 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5080 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5081 | BGP_VRF_IMPORT_RT_CFGD)) | |
5082 | mask_ecom_global_admin(&eval_tmp, eval); | |
5083 | ||
5084 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5085 | if (irt) | |
5086 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5087 | } | |
5088 | } | |
5089 | } | |
5090 | ||
5091 | ||
128ea8ab | 5092 | /* |
5093 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5094 | * The mapping will be used during route processing. | |
5095 | */ | |
d62a17ae | 5096 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5097 | { |
f6e07e1b | 5098 | uint32_t i; |
d62a17ae | 5099 | struct ecommunity_val *eval; |
5100 | struct listnode *node, *nnode; | |
5101 | struct ecommunity *ecom; | |
128ea8ab | 5102 | |
d62a17ae | 5103 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5104 | for (i = 0; i < ecom->size; i++) { | |
5105 | eval = (struct ecommunity_val *)(ecom->val | |
5106 | + (i | |
5107 | * ECOMMUNITY_SIZE)); | |
5108 | map_vni_to_rt(bgp, vpn, eval); | |
5109 | } | |
5110 | } | |
128ea8ab | 5111 | } |
5112 | ||
5113 | /* | |
5114 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5115 | */ | |
d62a17ae | 5116 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5117 | { |
f6e07e1b | 5118 | uint32_t i; |
d62a17ae | 5119 | struct ecommunity_val *eval; |
5120 | struct listnode *node, *nnode; | |
5121 | struct ecommunity *ecom; | |
128ea8ab | 5122 | |
d62a17ae | 5123 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5124 | for (i = 0; i < ecom->size; i++) { | |
5125 | struct irt_node *irt; | |
5126 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5127 | |
d62a17ae | 5128 | eval = (struct ecommunity_val *)(ecom->val |
5129 | + (i | |
5130 | * ECOMMUNITY_SIZE)); | |
5131 | /* If using "automatic" RT, we only care about the | |
5132 | * local-admin sub-field. | |
5133 | * This is to facilitate using VNI as the RT for EBGP | |
5134 | * peering too. | |
5135 | */ | |
5136 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5137 | if (!is_import_rt_configured(vpn)) | |
5138 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5139 | |
d62a17ae | 5140 | irt = lookup_import_rt(bgp, &eval_tmp); |
5141 | if (irt) | |
5142 | unmap_vni_from_rt(bgp, vpn, irt); | |
5143 | } | |
5144 | } | |
128ea8ab | 5145 | } |
5146 | ||
5147 | /* | |
5148 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5149 | * The mapping will be used during route processing. | |
5150 | */ | |
d62a17ae | 5151 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5152 | { |
c581d8b0 | 5153 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5154 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5155 | |
d62a17ae | 5156 | /* Map RT to VNI */ |
5157 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5158 | } |
5159 | ||
5160 | /* | |
5161 | * Derive Export RT automatically for VNI. | |
5162 | */ | |
d62a17ae | 5163 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5164 | { |
c581d8b0 | 5165 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5166 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5167 | } |
5168 | ||
676f83b9 | 5169 | /* |
5170 | * Derive RD automatically for VNI using passed information - it | |
5171 | * is of the form RouterId:unique-id-for-vni. | |
5172 | */ | |
5173 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5174 | { | |
9e97ff03 CS |
5175 | if (is_vrf_rd_configured(bgp)) |
5176 | return; | |
5177 | ||
92708db6 | 5178 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5179 | } |
5180 | ||
128ea8ab | 5181 | /* |
5182 | * Derive RD automatically for VNI using passed information - it | |
5183 | * is of the form RouterId:unique-id-for-vni. | |
5184 | */ | |
d62a17ae | 5185 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5186 | { |
c44ab6f1 | 5187 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5188 | |
d62a17ae | 5189 | vpn->prd.family = AF_UNSPEC; |
5190 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5191 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5192 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5193 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5194 | } |
5195 | ||
7df407ed CS |
5196 | /* |
5197 | * Lookup L3-VNI | |
5198 | */ | |
5199 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5200 | { | |
5201 | struct list *inst = bm->bgp; | |
5202 | struct listnode *node; | |
5203 | struct bgp *bgp_vrf; | |
5204 | ||
5205 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5206 | if (bgp_vrf->l3vni == vni) | |
5207 | return true; | |
5208 | } | |
5209 | ||
5210 | return false; | |
5211 | } | |
5212 | ||
128ea8ab | 5213 | /* |
5214 | * Lookup VNI. | |
5215 | */ | |
d62a17ae | 5216 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5217 | { |
d62a17ae | 5218 | struct bgpevpn *vpn; |
5219 | struct bgpevpn tmp; | |
128ea8ab | 5220 | |
d62a17ae | 5221 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5222 | tmp.vni = vni; | |
5223 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5224 | return vpn; | |
128ea8ab | 5225 | } |
5226 | ||
5227 | /* | |
5228 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5229 | */ | |
d62a17ae | 5230 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5231 | struct in_addr originator_ip, |
5232 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5233 | struct in_addr mcast_grp, |
5234 | ifindex_t svi_ifindex) | |
128ea8ab | 5235 | { |
d62a17ae | 5236 | struct bgpevpn *vpn; |
128ea8ab | 5237 | |
d62a17ae | 5238 | if (!bgp) |
5239 | return NULL; | |
128ea8ab | 5240 | |
d62a17ae | 5241 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5242 | |
d62a17ae | 5243 | /* Set values - RD and RT set to defaults. */ |
5244 | vpn->vni = vni; | |
5245 | vpn->originator_ip = originator_ip; | |
29c53922 | 5246 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5247 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5248 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5249 | |
d62a17ae | 5250 | /* Initialize route-target import and export lists */ |
5251 | vpn->import_rtl = list_new(); | |
5252 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5253 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5254 | vpn->export_rtl = list_new(); |
5255 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5256 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5257 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5258 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5259 | |
d62a17ae | 5260 | /* Initialize EVPN route table. */ |
960035b2 | 5261 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5262 | |
d62a17ae | 5263 | /* Add to hash */ |
5264 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5265 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5266 | return NULL; | |
5267 | } | |
6a8657d0 MK |
5268 | |
5269 | /* add to l2vni list on corresponding vrf */ | |
5270 | bgpevpn_link_to_l3vni(vpn); | |
5271 | ||
c44ab6f1 AK |
5272 | bgp_evpn_vni_es_init(vpn); |
5273 | ||
d62a17ae | 5274 | QOBJ_REG(vpn, bgpevpn); |
5275 | return vpn; | |
128ea8ab | 5276 | } |
5277 | ||
5278 | /* | |
5279 | * Free a given VPN - called in multiple scenarios such as zebra | |
5280 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5281 | * This just frees appropriate memory, caller should have taken other | |
5282 | * needed actions. | |
5283 | */ | |
d62a17ae | 5284 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5285 | { |
c44ab6f1 | 5286 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5287 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5288 | bgp_table_unlock(vpn->route_table); |
5289 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5290 | list_delete(&vpn->import_rtl); |
5291 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5292 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5293 | hash_release(bgp->vnihash, vpn); |
5294 | QOBJ_UNREG(vpn); | |
5295 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5296 | } |
5297 | ||
50f74cf1 | 5298 | /* |
5299 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5300 | */ |
d62a17ae | 5301 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5302 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5303 | { |
40381db7 | 5304 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5305 | } |
5306 | ||
5307 | /* | |
50f74cf1 | 5308 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5309 | */ |
d62a17ae | 5310 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5311 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5312 | { |
40381db7 | 5313 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5314 | } |
5315 | ||
db0e1937 MK |
5316 | /* filter routes which have martian next hops */ |
5317 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5318 | { | |
0291c246 MK |
5319 | afi_t afi; |
5320 | safi_t safi; | |
9bcb3eef | 5321 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5322 | struct bgp_table *table; |
40381db7 | 5323 | struct bgp_path_info *pi; |
db0e1937 MK |
5324 | |
5325 | afi = AFI_L2VPN; | |
5326 | safi = SAFI_EVPN; | |
5327 | ||
5328 | /* Walk entire global routing table and evaluate routes which could be | |
5329 | * imported into this VPN. Note that we cannot just look at the routes | |
5330 | * for the VNI's RD - | |
5331 | * remote routes applicable for this VNI could have any RD. | |
5332 | */ | |
5333 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5334 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5335 | rd_dest = bgp_route_next(rd_dest)) { | |
5336 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5337 | if (!table) |
5338 | continue; | |
5339 | ||
9bcb3eef DS |
5340 | for (dest = bgp_table_top(table); dest; |
5341 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5342 | |
9bcb3eef | 5343 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5344 | pi = pi->next) { |
db0e1937 MK |
5345 | |
5346 | /* Consider "valid" remote routes applicable for | |
5347 | * this VNI. */ | |
40381db7 DS |
5348 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5349 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5350 | continue; |
9bcb3eef DS |
5351 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5352 | pi->sub_type, pi->attr, | |
5353 | dest)) { | |
b54892e0 | 5354 | const struct prefix *p = |
9bcb3eef | 5355 | bgp_dest_get_prefix(dest); |
db0e1937 | 5356 | |
b54892e0 DS |
5357 | if (bgp_debug_update(pi->peer, p, NULL, |
5358 | 1)) { | |
5359 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5360 | |
b54892e0 | 5361 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5362 | attr_str, |
5363 | sizeof(attr_str)); | |
db0e1937 | 5364 | |
db0e1937 | 5365 | zlog_debug( |
56ca3b5b | 5366 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5367 | bgp->vrf_id, dest, |
db0e1937 | 5368 | attr_str); |
b54892e0 | 5369 | } |
db0e1937 | 5370 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5371 | p, pi); |
db0e1937 | 5372 | |
9bcb3eef | 5373 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5374 | safi); |
db0e1937 | 5375 | } |
db0e1937 MK |
5376 | } |
5377 | } | |
5378 | } | |
5379 | ||
5380 | return 0; | |
5381 | } | |
5382 | ||
128ea8ab | 5383 | /* |
5384 | * Handle del of a local MACIP. | |
5385 | */ | |
d62a17ae | 5386 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5387 | struct ipaddr *ip, int state) |
128ea8ab | 5388 | { |
d62a17ae | 5389 | struct bgpevpn *vpn; |
5390 | struct prefix_evpn p; | |
9bcb3eef | 5391 | struct bgp_dest *dest; |
128ea8ab | 5392 | |
d62a17ae | 5393 | /* Lookup VNI hash - should exist. */ |
5394 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5395 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5396 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5397 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5398 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5399 | return -1; | |
5400 | } | |
128ea8ab | 5401 | |
d62a17ae | 5402 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5403 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5404 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5405 | delete_evpn_route(bgp, vpn, &p); | |
5406 | } else { | |
5407 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5408 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5409 | if (dest) | |
5410 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5411 | } |
128ea8ab | 5412 | |
d62a17ae | 5413 | return 0; |
128ea8ab | 5414 | } |
5415 | ||
5416 | /* | |
5417 | * Handle add of a local MACIP. | |
5418 | */ | |
d62a17ae | 5419 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5420 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5421 | { |
d62a17ae | 5422 | struct bgpevpn *vpn; |
5423 | struct prefix_evpn p; | |
128ea8ab | 5424 | |
d62a17ae | 5425 | /* Lookup VNI hash - should exist. */ |
5426 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5427 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5428 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5429 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5430 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5431 | return -1; | |
5432 | } | |
128ea8ab | 5433 | |
d62a17ae | 5434 | /* Create EVPN type-2 route and schedule for processing. */ |
5435 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5436 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5437 | flog_err( |
e50f7cfd | 5438 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5439 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5440 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5441 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5442 | ? "sticky gateway" | |
5443 | : "", | |
c0d72166 | 5444 | mac, ip, flags); |
d62a17ae | 5445 | return -1; |
5446 | } | |
128ea8ab | 5447 | |
d62a17ae | 5448 | return 0; |
128ea8ab | 5449 | } |
5450 | ||
e3b78da8 | 5451 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5452 | struct bgp *bgp_vrf) |
5453 | { | |
e3b78da8 | 5454 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5455 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5456 | |
5e53dce3 T |
5457 | bgp_evpn = bgp_get_evpn(); |
5458 | assert(bgp_evpn); | |
6a8657d0 | 5459 | |
6a8657d0 MK |
5460 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5461 | bgpevpn_link_to_l3vni(vpn); | |
5462 | } | |
5463 | ||
14e814ea CS |
5464 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5465 | struct ethaddr *svi_rmac, | |
5466 | struct ethaddr *vrr_rmac, | |
0483af6e | 5467 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5468 | ifindex_t svi_ifindex, |
5469 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5470 | { |
5471 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5472 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5473 | struct listnode *node = NULL; |
5474 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5475 | as_t as = 0; |
5476 | ||
3621ebc5 | 5477 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5478 | * auto-creatio |
5479 | */ | |
5e53dce3 T |
5480 | bgp_evpn = bgp_get_evpn(); |
5481 | if (!bgp_evpn) { | |
af4c2728 | 5482 | flog_err( |
e50f7cfd | 5483 | EC_BGP_NO_DFLT, |
3621ebc5 | 5484 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5485 | l3vni); |
fe1dc5a3 MK |
5486 | return -1; |
5487 | } | |
5e53dce3 | 5488 | as = bgp_evpn->as; |
fe1dc5a3 | 5489 | |
0437e105 | 5490 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5491 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5492 | if (!bgp_vrf) { |
5493 | ||
5494 | int ret = 0; | |
5495 | ||
5d5393b9 DL |
5496 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5497 | vrf_id == VRF_DEFAULT | |
5498 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5499 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5500 | switch (ret) { |
fe1dc5a3 | 5501 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5502 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5503 | "BGP instance is already running; AS is %u", |
5504 | as); | |
fe1dc5a3 MK |
5505 | return -1; |
5506 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5507 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5508 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5509 | return -1; |
5510 | } | |
5511 | ||
5512 | /* mark as auto created */ | |
5513 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5514 | } | |
5515 | ||
0483af6e | 5516 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5517 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5518 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5519 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5520 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5521 | |
14e814ea CS |
5522 | /* copy anycast MAC from VRR MAC */ |
5523 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5524 | /* copy sys RMAC from SVI MAC */ | |
5525 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5526 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5527 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5528 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5529 | ||
c0d72166 DS |
5530 | if (bgp_debug_zebra(NULL)) |
5531 | zlog_debug( | |
5532 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5533 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5534 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5535 | : "disable", | |
5536 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5537 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5538 | is_anycast_mac ? "Enable" : "Disable"); | |
5539 | ||
c48d9f5f | 5540 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5541 | if (filter) { |
c48d9f5f MK |
5542 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5543 | ||
10f70510 AD |
5544 | /* |
5545 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5546 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5547 | * that explicitly. | |
5548 | */ | |
5549 | } else { | |
5550 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5551 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5552 | ||
5553 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5554 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5555 | ||
5556 | /* | |
5557 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5558 | * flag, update all MACIP routes in this VNI | |
5559 | */ | |
5560 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5561 | update_all_type2_routes(bgp_evpn, vpn); | |
5562 | } | |
5563 | } | |
5564 | } | |
5565 | ||
530e8a6e | 5566 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5567 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5568 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5569 | else |
5570 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5571 | ||
c581d8b0 MK |
5572 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5573 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5574 | |
5575 | /* auto derive RD */ | |
676f83b9 | 5576 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5577 | |
6a8657d0 | 5578 | /* link all corresponding l2vnis */ |
5e53dce3 | 5579 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5580 | (void (*)(struct hash_bucket *, |
996c9314 | 5581 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5582 | bgp_vrf); |
5583 | ||
c48d9f5f MK |
5584 | /* Only update all corresponding type-2 routes if we are advertising two |
5585 | * labels along with type-2 routes | |
5586 | */ | |
5587 | if (!filter) | |
5588 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5589 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5590 | |
06d2e8f3 MK |
5591 | /* advertise type-5 routes if needed */ |
5592 | update_advertise_vrf_routes(bgp_vrf); | |
5593 | ||
5ba238b7 MK |
5594 | /* install all remote routes belonging to this l3vni into correspondng |
5595 | * vrf */ | |
5596 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5597 | |
5598 | return 0; | |
5599 | } | |
5600 | ||
996c9314 | 5601 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5602 | { |
5603 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5604 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5605 | struct listnode *node = NULL; |
18abc1eb | 5606 | struct listnode *next = NULL; |
f1f8b53c | 5607 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5608 | |
5609 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5610 | if (!bgp_vrf) { | |
af4c2728 | 5611 | flog_err( |
e50f7cfd | 5612 | EC_BGP_NO_DFLT, |
996c9314 LB |
5613 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5614 | l3vni); | |
fe1dc5a3 MK |
5615 | return -1; |
5616 | } | |
5617 | ||
5e53dce3 T |
5618 | bgp_evpn = bgp_get_evpn(); |
5619 | if (!bgp_evpn) { | |
af4c2728 | 5620 | flog_err( |
e50f7cfd | 5621 | EC_BGP_NO_DFLT, |
3621ebc5 | 5622 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5623 | l3vni); |
f1f8b53c MK |
5624 | return -1; |
5625 | } | |
5626 | ||
d846168d | 5627 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5628 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5629 | * routes. This will uninstalling the routes from zebra and decremnt the |
5630 | * bgp info count. | |
523cafc4 | 5631 | */ |
d846168d | 5632 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5633 | |
06d2e8f3 MK |
5634 | /* delete/withdraw all type-5 routes */ |
5635 | delete_withdraw_vrf_routes(bgp_vrf); | |
5636 | ||
fe1dc5a3 MK |
5637 | /* remove the l3vni from vrf instance */ |
5638 | bgp_vrf->l3vni = 0; | |
5639 | ||
5640 | /* remove the Rmac from the BGP vrf */ | |
5641 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5642 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5643 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5644 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5645 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5646 | |
530e8a6e | 5647 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5648 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5649 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5650 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5651 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5652 | } |
530e8a6e CS |
5653 | |
5654 | /* remove default export RT */ | |
5655 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5656 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5657 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5658 | } |
fe1dc5a3 | 5659 | |
f1f8b53c | 5660 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5661 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5662 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5663 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5664 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5665 | } |
5666 | } | |
fe1dc5a3 | 5667 | |
18abc1eb | 5668 | /* If any L2VNIs point to this instance, unlink them. */ |
5669 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5670 | bgpevpn_unlink_from_l3vni(vpn); | |
5671 | ||
ff9d54fb CS |
5672 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5673 | ||
fe1dc5a3 MK |
5674 | /* Delete the instance if it was autocreated */ |
5675 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5676 | bgp_delete(bgp_vrf); | |
5677 | ||
5678 | return 0; | |
5679 | } | |
5680 | ||
128ea8ab | 5681 | /* |
5682 | * Handle del of a local VNI. | |
5683 | */ | |
d62a17ae | 5684 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5685 | { |
d62a17ae | 5686 | struct bgpevpn *vpn; |
128ea8ab | 5687 | |
d62a17ae | 5688 | /* Locate VNI hash */ |
5689 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5690 | if (!vpn) { | |
1e00627b | 5691 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5692 | flog_warn( |
e50f7cfd | 5693 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5694 | "%u: VNI hash entry for VNI %u not found at DEL", |
5695 | bgp->vrf_id, vni); | |
d62a17ae | 5696 | return 0; |
5697 | } | |
128ea8ab | 5698 | |
d62a17ae | 5699 | /* Remove all local EVPN routes and schedule for processing (to |
5700 | * withdraw from peers). | |
5701 | */ | |
5702 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5703 | |
9daa5d47 | 5704 | vpn->svi_ifindex = 0; |
db0e1937 MK |
5705 | /* |
5706 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5707 | */ | |
5708 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5709 | ||
d62a17ae | 5710 | /* Clear "live" flag and see if hash needs to be freed. */ |
5711 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5712 | if (!is_vni_configured(vpn)) | |
5713 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5714 | |
d62a17ae | 5715 | return 0; |
128ea8ab | 5716 | } |
5717 | ||
5718 | /* | |
d1911c26 | 5719 | * Handle add (or update) of a local VNI. The VNI changes we care |
5720 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5721 | */ |
d62a17ae | 5722 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5723 | struct in_addr originator_ip, |
5724 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5725 | struct in_addr mcast_grp, |
5726 | ifindex_t svi_ifindex) | |
d62a17ae | 5727 | { |
5728 | struct bgpevpn *vpn; | |
5729 | struct prefix_evpn p; | |
5730 | ||
d62a17ae | 5731 | /* Lookup VNI. If present and no change, exit. */ |
5732 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5733 | if (vpn) { |
29c53922 | 5734 | |
d1911c26 | 5735 | if (is_vni_live(vpn) |
5736 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5737 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
5738 | && vpn->tenant_vrf_id == tenant_vrf_id |
5739 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 5740 | /* Probably some other param has changed that we don't |
5741 | * care about. */ | |
5742 | return 0; | |
5743 | ||
76d07c7a AK |
5744 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5745 | ||
9daa5d47 AD |
5746 | vpn->svi_ifindex = svi_ifindex; |
5747 | ||
d1911c26 | 5748 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5749 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5750 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5751 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5752 | bgpevpn_link_to_l3vni(vpn); |
5753 | } | |
29c53922 | 5754 | |
d1911c26 | 5755 | /* If tunnel endpoint IP has changed, update (and delete prior |
5756 | * type-3 route, if needed.) | |
5757 | */ | |
5758 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5759 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5760 | |
d1911c26 | 5761 | /* Update all routes with new endpoint IP and/or export RT |
5762 | * for VRFs | |
5763 | */ | |
5764 | if (is_vni_live(vpn)) | |
5765 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5766 | } |
5767 | ||
5768 | /* Create or update as appropriate. */ | |
5769 | if (!vpn) { | |
76d07c7a | 5770 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
9daa5d47 | 5771 | mcast_grp, svi_ifindex); |
d62a17ae | 5772 | if (!vpn) { |
af4c2728 | 5773 | flog_err( |
e50f7cfd | 5774 | EC_BGP_VNI, |
d62a17ae | 5775 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5776 | bgp->vrf_id, vni); | |
5777 | return -1; | |
5778 | } | |
5779 | } | |
5780 | ||
db0e1937 | 5781 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5782 | if (is_vni_live(vpn)) |
5783 | return 0; | |
5784 | ||
d62a17ae | 5785 | /* Mark as "live" */ |
5786 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5787 | ||
db0e1937 MK |
5788 | /* tunnel is now active, add tunnel-ip to db */ |
5789 | bgp_tip_add(bgp, &originator_ip); | |
5790 | ||
5791 | /* filter routes as nexthop database has changed */ | |
5792 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5793 | ||
fd069644 DS |
5794 | /* |
5795 | * Create EVPN type-3 route and schedule for processing. | |
5796 | * | |
5797 | * RT-3 only if doing head-end replication | |
5798 | */ | |
833b8a50 AK |
5799 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5800 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5801 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5802 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5803 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5804 | "%u: Type3 route creation failure for VNI %u", | |
5805 | bgp->vrf_id, vni); | |
5806 | return -1; | |
5807 | } | |
d62a17ae | 5808 | } |
5809 | ||
5810 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5811 | * VNI, | |
5812 | * install them. | |
5813 | */ | |
5814 | install_routes_for_vni(bgp, vpn); | |
5815 | ||
d7d97010 MK |
5816 | /* If we are advertising gateway mac-ip |
5817 | It needs to be conveyed again to zebra */ | |
5818 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5819 | ||
df070e6f CS |
5820 | /* advertise svi mac-ip knob to zebra */ |
5821 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5822 | ||
d62a17ae | 5823 | return 0; |
b18825eb | 5824 | } |
14c1a7bf | 5825 | |
fd069644 DS |
5826 | /* |
5827 | * Handle change in setting for BUM handling. The supported values | |
5828 | * are head-end replication and dropping all BUM packets. Any change | |
5829 | * should be registered with zebra. Also, if doing head-end replication, | |
5830 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5831 | * to be dropped, the RT-3s must be withdrawn. | |
5832 | */ | |
5833 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5834 | { | |
5835 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5836 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5837 | "Flooding" : "Flooding Disabled"); | |
5838 | ||
5839 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5840 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5841 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5842 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5843 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5844 | } | |
5845 | ||
7724c0a1 | 5846 | /* |
5847 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5848 | * EVPN routes from peers. | |
5849 | */ | |
d62a17ae | 5850 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5851 | { |
e3b78da8 | 5852 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5853 | void *))cleanup_vni_on_disable, |
5854 | bgp); | |
7724c0a1 | 5855 | } |
5856 | ||
14c1a7bf | 5857 | /* |
5858 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5859 | * BGP instance (default) is being freed. | |
5860 | */ | |
d62a17ae | 5861 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5862 | { |
1525e99f | 5863 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5864 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5865 | bgp); |
5866 | ||
5867 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5868 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5869 | |
5870 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5871 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5872 | |
5873 | hash_free(bgp->vnihash); | |
d62a17ae | 5874 | bgp->vnihash = NULL; |
1525e99f | 5875 | |
6a154c88 DL |
5876 | list_delete(&bgp->vrf_import_rtl); |
5877 | list_delete(&bgp->vrf_export_rtl); | |
5878 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5879 | } |
5880 | ||
5881 | /* | |
5882 | * Initialization for EVPN | |
5883 | * Create | |
5884 | * VNI hash table | |
5885 | * hash for RT to VNI | |
14c1a7bf | 5886 | */ |
d62a17ae | 5887 | void bgp_evpn_init(struct bgp *bgp) |
5888 | { | |
5889 | bgp->vnihash = | |
5890 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5891 | bgp->import_rt_hash = | |
5892 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5893 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5894 | bgp->vrf_import_rt_hash = |
5895 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5896 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5897 | bgp->vrf_import_rtl = list_new(); |
5898 | bgp->vrf_import_rtl->cmp = | |
5899 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5900 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5901 | bgp->vrf_export_rtl = list_new(); |
5902 | bgp->vrf_export_rtl->cmp = | |
5903 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5904 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5905 | bgp->l2vnis = list_new(); |
64465785 | 5906 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5907 | /* By default Duplicate Address Dection is enabled. |
5908 | * Max-moves (N) 5, detection time (M) 180 | |
5909 | * default action is warning-only | |
5910 | * freeze action permanently freezes address, | |
5911 | * and freeze time (auto-recovery) is disabled. | |
5912 | */ | |
5913 | if (bgp->evpn_info) { | |
5914 | bgp->evpn_info->dup_addr_detect = true; | |
5915 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5916 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5917 | bgp->evpn_info->dad_freeze = false; | |
5918 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5919 | /* Initialize zebra vxlan */ |
5920 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5921 | /* Enable PIP feature by default for bgp vrf instance */ |
5922 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5923 | struct bgp *bgp_default; | |
5924 | ||
5925 | bgp->evpn_info->advertise_pip = true; | |
5926 | bgp_default = bgp_get_default(); | |
5927 | if (bgp_default) | |
5928 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5929 | } | |
85c8d83b | 5930 | } |
fd069644 DS |
5931 | |
5932 | /* Default BUM handling is to do head-end replication. */ | |
5933 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
5934 | |
5935 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 5936 | } |
10ebe1ab MK |
5937 | |
5938 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5939 | { | |
5940 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 5941 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 5942 | } |
44c69747 LK |
5943 | |
5944 | /* | |
5945 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5946 | */ | |
5f040085 | 5947 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5948 | { |
5949 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5950 | ||
5951 | if (!pfx || pfx->family != AF_EVPN) | |
5952 | return 0; | |
5953 | ||
5954 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5955 | return 0; | |
5956 | ||
5957 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5958 | } | |
7c312383 AD |
5959 | |
5960 | /* | |
5961 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5962 | */ | |
5a1ae2c2 | 5963 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5964 | { |
5965 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5966 | ||
5967 | /* | |
e11329ca | 5968 | * EVPN routes should be marked as valid only if the nexthop is |
5969 | * reachable. Only if this happens, the route should be imported | |
5970 | * (into VNI or VRF routing tables) and/or advertised. | |
5971 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5972 | * type-5 routes. It may be tweaked later on for other routes, or | |
5973 | * even removed completely when all routes are handled. | |
7c312383 AD |
5974 | */ |
5975 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5976 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5977 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5978 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5979 | return true; |
5980 | ||
5981 | return false; | |
5982 | } |